HOMEWORKQUIZZES-1
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Transcript of HOMEWORKQUIZZES-1
HOMEWORK
Title:Homework #1
Started:January 13, 2009 9:37 PM
Submitted:January 13, 2009 9:46 PM
Time spent:00:09:04
Total score:23/23 = 100% Total score adjusted by 0.0 Maximum possible score: 23
1.
Please match the term with the descriptor.
a positively charged ion
a negatively charged ion
bond when atom share electrons
bond between ions of opposite charges
bond when 2 molecules share an atom of hydrogen
anion
hyddrogen bond
cation
covalent bond
ionic bond
Statement
Response
Value
a positively charged ion
cation
20.0%
a negatively charged ion
anion
20.0%
bond when atom share electrons
covalent bond
20.0%
bond between ions of opposite charges
ionic bond
20.0%
bond when 2 molecules share an atom of hydrogen
hyddrogen bond
20.0%
Score:
5/5
2.
Match the term with the descriptor.
a reaction that involves an atom losing an electron
a reaction that involves an atom gaining an electron
when molecules move from greater to lesser concentration
at least 2 atoms hooked together
reduction reaction
oxidation reaction
diffusion
molecule
Statement
Response
Value
a reaction that involves an atom losing an electron
oxidation reaction
25.0%
a reaction that involves an atom gaining an electron
reduction reaction
25.0%
when molecules move from greater to lesser concentration
diffusion
25.0%
at least 2 atoms hooked together
molecule
25.0%
Score:
4/4
3.
Please match the following terms about the parts of an atom.
particles that make up all matter
in nucleus and has positive charge
in nucleus and has neutral charge
outside nucleus and has negtive charge
another name for energy level
electron
proton
atoms
neutron
shell
Statement
Response
Value
particles that make up all matter
atoms
20.0%
in nucleus and has positive charge
proton
20.0%
in nucleus and has neutral charge
neutron
20.0%
outside nucleus and has negtive charge
electron
20.0%
another name for energy level
shell
20.0%
Score:
5/5
4.
Match the answer to the descriptor about pH.
substance that prevents a change in pH
physiological pH
pH of an acid
pH of a base
7.35 -7.45
0-6
buffer
8-14
Statement
Response
Value
substance that prevents a change in pH
buffer
25.0%
physiological pH
7.35 -7.45
25.0%
pH of an acid
0-6
25.0%
pH of a base
8-14
25.0%
Score:
4/4
5.
What term is described by each phrase.
an insoluble solid compound in a solution
molecules with partial charges
molecules that share electrons equally
another name for "water loving"
another name for molecules that hate water
hydrophilic
precipitate
non-polar
hydrophobic
polar
Statement
Response
Value
an insoluble solid compound in a solution
precipitate
20.0%
molecules with partial charges
polar
20.0%
molecules that share electrons equally
non-polar
20.0%
another name for "water loving"
hydrophilic
20.0%
another name for molecules that hate water
hydrophobic
20.0%
Score:
5/5
Title:Homework #2
Started:January 13, 2009 9:47 PM
Submitted:January 13, 2009 9:57 PM
Time spent:00:09:43
Total score:20/20 = 100% Total score adjusted by 0.0 Maximum possible score: 20
1.
Please match the term with its description.
a question to be considered, solved or answered
when you take note of something
a proposed explaination that can be tested
a way to test a hypothesis under controlled conditions
the summary outcome of an experiment
experiment
hypothesis
conclusion
observation
problem
Statement
Response
Value
a question to be considered, solved or answered
problem
20.0%
when you take note of something
observation
20.0%
a proposed explaination that can be tested
hypothesis
20.0%
a way to test a hypothesis under controlled conditions
experiment
20.0%
the summary outcome of an experiment
conclusion
20.0%
Score:
5/5
2.
Please match the term with its description.
factor or condition that may be changed
when your results are affected by your beliefs
the group that you compare with the experimental group
2 or more factors changing at the same time
repeating an experiment to verify results
control
replication
correlation
bias
variable
Statement
Response
Value
factor or condition that may be changed
variable
20.0%
when your results are affected by your beliefs
bias
20.0%
the group that you compare with the experimental group
control
20.0%
2 or more factors changing at the same time
correlation
20.0%
repeating an experiment to verify results
replication
20.0%
Score:
5/5
3.
Please match the term with the descriptor
another name for human intervention study
measurements that are quantifiable, valid, reliable and unbiased
measurements that are opinion and feelings
way to assure that experiments are correctly interpreted
scientific explaination that may be proven wrong
theory
peer-review
objective
clincial trial
subjective
Statement
Response
Value
another name for human intervention study
clincial trial
20.0%
measurements that are quantifiable, valid, reliable and unbiased
objective
20.0%
measurements that are opinion and feelings
subjective
20.0%
way to assure that experiments are correctly interpreted
peer-review
20.0%
scientific explaination that may be proven wrong
theory
20.0%
Score:
5/5
4.
Please match the term with its description.
studies that observe people over time
responsibilities of Institutional Review Board
responsibilities of Animal Care and Usage Commitee
sham treatment, indisinguishable from the real treatment
when only researchers know who got the treatment
placebo
protecting human research subjects
longitudinal
ensure proper treatment of research animals
single-blind
Statement
Response
Value
studies that observe people over time
longitudinal
20.0%
responsibilities of Institutional Review Board
protecting human research subjects
20.0%
responsibilities of Animal Care and Usage Commitee
ensure proper treatment of research animals
20.0%
sham treatment, indisinguishable from the real treatment
placebo
20.0%
when only researchers know who got the treatment
single-blind
20.0%
Score:
5/5
Title:Homework #3
Started:January 26, 2009 8:27 PM
Submitted:January 26, 2009 8:46 PM
Time spent:00:18:43
Total score:20/20 = 100% Total score adjusted by 0.0 Maximum possible score: 20
1.
Please match the terms with the correct descriptor
bacterial cell
mammalian cell
cellular machinery for making proteins
molecule that carries amino acids for protein synthesis
pattern used in protein synthesis
ribosomal RNA, aka ribosomes
eukaryotic cell
prokaryotic cell
messenger RNA
transfer RNA
Statement
Response
Value
bacterial cell
prokaryotic cell
20.0%
mammalian cell
eukaryotic cell
20.0%
cellular machinery for making proteins
ribosomal RNA, aka ribosomes
20.0%
molecule that carries amino acids for protein synthesis
transfer RNA
20.0%
pattern used in protein synthesis
messenger RNA
20.0%
Score:
5/5
2.
Match the name of the organelle with its principal function
transport into the cell
transport out of the cell
digestion of foriegn or damaged material
contains the chromosomes
synthesis of export proteins
lysosomes
exocytotic vesicles
nucleus
rough endoplasmic reticulum
endocytotic vesicles
Statement
Response
Value
transport into the cell
endocytotic vesicles
20.0%
transport out of the cell
exocytotic vesicles
20.0%
digestion of foriegn or damaged material
lysosomes
20.0%
contains the chromosomes
nucleus
20.0%
synthesis of export proteins
rough endoplasmic reticulum
20.0%
Score:
5/5
3.
Match the name of the organelle with its principal function
degredation of toxic compounds (detoxification)
modification and packaging of proteins
ATP production
watery fluid that fills the cell
enclosure that holds organelles of the cell
cytoplasm
peroxisomes
mitochondria
golgi
plasma membrane
Statement
Response
Value
degredation of toxic compounds (detoxification)
peroxisomes
20.0%
modification and packaging of proteins
golgi
20.0%
ATP production
mitochondria
20.0%
watery fluid that fills the cell
cytoplasm
20.0%
enclosure that holds organelles of the cell
plasma membrane
20.0%
Score:
5/5
4.
The following terms are related in some way to the plasma membrane. Please match the term with the appropriate descriptor.
how large molecules get into a cell
how large molecules are excreted from a cell
the main component of plasma membrane
another lipid found in plasm membrane other than main component
things in membrane that help molecules get across
exocytosis
cholesterol
transport proteins
endocytosis
phospholipid
Statement
Response
Value
how large molecules get into a cell
endocytosis
20.0%
how large molecules are excreted from a cell
exocytosis
20.0%
the main component of plasma membrane
phospholipid
20.0%
another lipid found in plasm membrane other than main component
cholesterol
20.0%
things in membrane that help molecules get across
transport proteins
20.0%
Score:
5/5
Title:Homework #4
Started:January 26, 2009 9:25 PM
Submitted:January 26, 2009 9:43 PM
Time spent:00:17:43
Total score:18/20 = 90% Total score adjusted by 0.0 Maximum possible score: 20
1.
The following terms are related to the cellular production of energy. Please match the term with the appropriate descriptor.
that which cannot be created or destroyed
in nature, things naturally go toward what?
type of energy from braking molecular bonds
basic energy currency of the body
series of chemical reactions to break down carbohydrate
cellular respiration
chemical
ATP
energy
disorder
Statement
Response
Value
that which cannot be created or destroyed
energy
20.0%
in nature, things naturally go toward what?
disorder
20.0%
type of energy from braking molecular bonds
chemical
20.0%
basic energy currency of the body
ATP
20.0%
series of chemical reactions to break down carbohydrate
cellular respiration
20.0%
Score:
5/5
2.
The following relates to cellular metabolism. Match the term with the appropriate descriptor.
making a chemical bond
breaking a chemical bond
the electron transport chain
the TCA cycle
glycolysis
requires oxygen
produces pyruvate
releases energy
requires energy
produces carbon dioxide
Statement
Response
Value
making a chemical bond
releases energy
0.0%
breaking a chemical bond
requires energy
0.0%
the electron transport chain
requires oxygen
20.0%
the TCA cycle
produces carbon dioxide
20.0%
glycolysis
produces pyruvate
20.0%
Score:
3/5
3.
The following relates to cellular metabolism. Match the term with the appropriate descriptor.
energy production in the absence of oxygen
energy production in presence of oxgyen
where glycolysis occurs
where TCA occurs
where electron transport occurs
anaerobic
mitochondial membrane
mitochondria
cytoplasm
aerobic
Statement
Response
Value
energy production in the absence of oxygen
anaerobic
20.0%
energy production in presence of oxgyen
aerobic
20.0%
where glycolysis occurs
cytoplasm
20.0%
where TCA occurs
mitochondria
20.0%
where electron transport occurs
mitochondial membrane
20.0%
Score:
5/5
4.
The following relates to chemical reactions that occur in the body. Match the following with the appropriate descriptor.
molecule which catalyzes metabolic reactions
molecule which assists an enzyme
the thing which an enzyme acts upon
the thing which an enzyme makes
ordered sequence of chemical reactions
metabolic pathway
cofactor
substrate
enzyme
product
Statement
Response
Value
molecule which catalyzes metabolic reactions
enzyme
20.0%
molecule which assists an enzyme
cofactor
20.0%
the thing which an enzyme acts upon
substrate
20.0%
the thing which an enzyme makes
product
20.0%
ordered sequence of chemical reactions
metabolic pathway
20.0%
Score:
5/5
Title:Homework #5
Started:January 26, 2009 10:03 PM
Submitted:January 26, 2009 10:07 PM
Time spent:00:03:18
Total score:10/10 = 100% Total score adjusted by 0.0 Maximum possible score: 10
1.
The following relates to interactions between water and particles. Match the following term with the appropriate descriptor.
fluid inside a cell
movement of water toward a concentration of particles
spontaneous movement of particles toward lesser concentration
a type of diffusion where the process is assisted by a carrier or transport protein
type of transport that moves a particle toward a higher concentration
facilitated
active
osmosis
diffusion
intracellular
Statement
Response
Value
fluid inside a cell
intracellular
20.0%
movement of water toward a concentration of particles
osmosis
20.0%
spontaneous movement of particles toward lesser concentration
diffusion
20.0%
a type of diffusion where the process is assisted by a carrier or transport protein
facilitated
20.0%
type of transport that moves a particle toward a higher concentration
active
20.0%
Score:
5/5
2.
Regarding homeostatic control systems, match the term with the appropriate descriptor.
first to notice imbalance in internal environment
where signals are received and response coordinated
the tissues and organs that carry out the response
response that will correct a change in the body
response that anticipates a change in the body
negative feedback loop
effector systems
sensors
feed forward loop
integrating center
Statement
Response
Value
first to notice imbalance in internal environment
sensors
20.0%
where signals are received and response coordinated
integrating center
20.0%
the tissues and organs that carry out the response
effector systems
20.0%
response that will correct a change in the body
negative feedback loop
20.0%
response that anticipates a change in the body
feed forward loop
20.0%
Score:
5/5
Title:Homework #6
Started:February 6, 2009 3:50 PM
Submitted:February 6, 2009 3:52 PM
Time spent:00:02:06
Total score:15/15 = 100% Total score adjusted by 0.0 Maximum possible score: 15
1.
Please match the compound with its function.
gastrin
secretin
CCK
bicarbonate
saliva
tells pancrease to secrete bicarbonate
tells gall bladder to contract and release bile
stimulates secretion of gastric juice
neutralizes the acidic chyme in small intestine
mostens food and contains some digestive enzymes
Statement
Response
Value
gastrin
stimulates secretion of gastric juice
20.0%
secretin
tells pancrease to secrete bicarbonate
20.0%
CCK
tells gall bladder to contract and release bile
20.0%
bicarbonate
neutralizes the acidic chyme in small intestine
20.0%
saliva
mostens food and contains some digestive enzymes
20.0%
Score:
5/5
2.
Please match the GI term with the descriptor.
peristalsis
chyme
villi
microflora
microvilli
form brush border in small intestine
bacteria that inhabit the large intestine
rhythmic muscle contractions that move food
fingerlike projections in small intestine
partially digested food mixed with stomach secretions
Statement
Response
Value
peristalsis
rhythmic muscle contractions that move food
20.0%
chyme
partially digested food mixed with stomach secretions
20.0%
villi
fingerlike projections in small intestine
20.0%
microflora
bacteria that inhabit the large intestine
20.0%
microvilli
form brush border in small intestine
20.0%
Score:
5/5
3.
Please match the GI term with the description of its location.
duodenum
parietal and chief cells
hepatic portal vein
lymphatic system
appendix
stomach
parallel to blood vessels throughout body
first section of small intestine
intersection of small and large intestines
between intestines and liver
Statement
Response
Value
duodenum
first section of small intestine
20.0%
parietal and chief cells
stomach
20.0%
hepatic portal vein
between intestines and liver
20.0%
lymphatic system
parallel to blood vessels throughout body
20.0%
appendix
intersection of small and large intestines
20.0%
Score:
5/5
Title:Homework #7
Started:February 5, 2009 7:18 PM
Submitted:February 5, 2009 7:24 PM
Time spent:00:06:07
Total score:21/21 = 100% Total score adjusted by 0.0 Maximum possible score: 21
1.
Please match the part of the lower GI tract with its function.
large intestine
small intestine
pancreas
liver
gall bladder
fermentation of some fibers occurs here
most nutrients are absorbed here
makes digestive enzymes and bicarbonate
makes bile
stores bile
Statement
Response
Value
large intestine
fermentation of some fibers occurs here
20.0%
small intestine
most nutrients are absorbed here
20.0%
pancreas
makes digestive enzymes and bicarbonate
20.0%
liver
makes bile
20.0%
gall bladder
stores bile
20.0%
Score:
5/5
2.
Please match the part of the upper GI tract with its function
mouth
stomach
esophagus
trachea
pyloric sphincter
mixes food with saliva
controls release of chyme from stomach
allows are to pass to and from lungs
connects mouth to stomach
temporary storage for food
Statement
Response
Value
mouth
mixes food with saliva
20.0%
stomach
temporary storage for food
20.0%
esophagus
connects mouth to stomach
20.0%
trachea
allows are to pass to and from lungs
20.0%
pyloric sphincter
controls release of chyme from stomach
20.0%
Score:
5/5
3.
Please match the term with the appropriate descriptor
stores waste prior to evacuation (defecation)
second section of small intestine
third section of small intestine
another name for large intestine
cell of small intestine responsible for absorption
most muscular organ in GI tract
organ that makes bile but doesn't make digestive enzymes
portion of food swallowed at one time
molecule that carries out digestion
name of system of blood vessels
name of system of lymph vessels
liver
colon
jejunum
enterocyte
rectum
lymphatic
circulatory or vasular
enzyme
ileum
stomach
bolus
Statement
Response
Value
stores waste prior to evacuation (defecation)
rectum
9.09%
second section of small intestine
jejunum
9.09%
third section of small intestine
ileum
9.09%
another name for large intestine
colon
9.09%
cell of small intestine responsible for absorption
enterocyte
9.09%
most muscular organ in GI tract
stomach
9.09%
organ that makes bile but doesn't make digestive enzymes
liver
9.09%
portion of food swallowed at one time
bolus
9.09%
molecule that carries out digestion
enzyme
9.09%
name of system of blood vessels
circulatory or vasular
9.09%
name of system of lymph vessels
lymphatic
9.1%
Score:
11/11
Title:Homework #8
Started:March 23, 2009 8:29 PM
Submitted:March 23, 2009 8:32 PM
Time spent:00:03:15
Total score:25/25 = 100% Total score adjusted by 0.0 Maximum possible score: 25
1.
Please match the following disease or condition to its descriptor.
result of insufficient production of insulin
a deficiency of lactase that causes malabsorption of milk sugar
inability to respond properly to insulin
abnormally low blood glucose
blood vessels become partially blocked by plaque
hypoglycemia
cardiovascular disease
Type I diabetes mellitus
lactose intolerance
Type II diabetes mellitus
Statement
Response
Value
result of insufficient production of insulin
Type I diabetes mellitus
20.0%
a deficiency of lactase that causes malabsorption of milk sugar
lactose intolerance
20.0%
inability to respond properly to insulin
Type II diabetes mellitus
20.0%
abnormally low blood glucose
hypoglycemia
20.0%
blood vessels become partially blocked by plaque
cardiovascular disease
20.0%
Score:
5/5
2.
Please match the following term with its function.
glucagon
glycogen
gluconeogenesis
glycolysis
glycemic index
metabolic pathway that makes blood sugar from protein
increase blood sugar when it is low
the storage form of carbohydrate in animals
metabolic pathway that makes pyruvate from glucose
effect of a given amount of food on blood sugar
Statement
Response
Value
glucagon
increase blood sugar when it is low
20.0%
glycogen
the storage form of carbohydrate in animals
20.0%
gluconeogenesis
metabolic pathway that makes blood sugar from protein
20.0%
glycolysis
metabolic pathway that makes pyruvate from glucose
20.0%
glycemic index
effect of a given amount of food on blood sugar
20.0%
Score:
5/5
3.
Please match the carbohydrate term to the descriptor.
a disaccharide
common examples are pectins and gums
storage form of carbohydrate in plants
common examples are lignin and cellulose
combines with glucose to make lactose
galactose
insoluble fiber
soluble fiber
maltose
starch
Statement
Response
Value
a disaccharide
maltose
20.0%
common examples are pectins and gums
soluble fiber
20.0%
storage form of carbohydrate in plants
starch
20.0%
common examples are lignin and cellulose
insoluble fiber
20.0%
combines with glucose to make lactose
galactose
20.0%
Score:
5/5
4.
Please indicate the location where the following enzyme or action occurs.
lactase digests lactose
salivary amylase digests starch
production of pancreatic amylase
fermentation of fiber
breakdown of starch into disaccharides
intestinal brush border
pancreas
lumen of small intestine
mouth
large intestine
Statement
Response
Value
lactase digests lactose
intestinal brush border
20.0%
salivary amylase digests starch
mouth
20.0%
production of pancreatic amylase
pancreas
20.0%
fermentation of fiber
large intestine
20.0%
breakdown of starch into disaccharides
lumen of small intestine
20.0%
Score:
5/5
5.
Please match the following carbohydrate term with the descriptor.
form of sugar in blood
found in fruits and vegetables
2 molecules of glucose
otherwise known as table sugar
disaccharide found in animal milk
fructose
lactose
maltose
sucrose
glucose
Statement
Response
Value
form of sugar in blood
glucose
20.0%
found in fruits and vegetables
fructose
20.0%
2 molecules of glucose
maltose
20.0%
otherwise known as table sugar
sucrose
20.0%
disaccharide found in animal milk
lactose
20.0%
Score:
5/5
Title:Homework #9
Started:March 26, 2009 8:37 PM
Submitted:March 26, 2009 8:49 PM
Time spent:00:12:29
Total score:14/15 = 93.3333% Total score adjusted by 0.0 Maximum possible score: 15
1.
Which of the following carbohydrates is not absorbed in its current form?
Student Response
Value
Feedback
A.
glucose
B.
fructose
C.
sucrose
100%
Correct. Sucrose has to be broken down to glucose and fructose before it can be absorbed.
D.
galactose
Score:
1/1
2.
Which metabolic pathway will produce energy from carbohydrate in the absence of oxygen.
Student Response
Value
Feedback
A.
glycolysis
100%
Correct
B.
TCA cycle
C.
electron transport chain
D.
Kreb's cycle
Score:
1/1
3.
Which of the following is the hormone that causes blood glucose to increase?
Student Response
Value
Feedback
A.
glycogen
B.
insulin
C.
norepinephrine
D.
glucagon
100%
Correct. Glucagon stimulates the body to make new glucose. It also causes the body to utilize other macronutrients for energy in order to "spare" blood glucose.
Score:
1/1
4.
Which of the following is NOT a disaccharide?
Student Response
Value
Feedback
A.
lactose
B.
galactose
100%
Correct
C.
sucrose
D.
maltose
Score:
1/1
5.
Which of these enzymes is NOT active in the duodenum?
Student Response
Value
Feedback
A.
salivary amylase
100%
Correct. Salivary amylase has been denatured by acid in the stomach so it is not active in the small intestine.
B.
pancreatic amylase
C.
sucrase
D.
maltase
Score:
1/1
6.
Which of the following is NOT a possible fate of ingested glucose?
Student Response
Value
Feedback
A.
storage as glycogen
B.
conversion to fat
C.
immediate utilization for energy
D.
conversion to protein
100%
Correct. Carbohydrate cannot be converted to protein.
Score:
1/1
7.
Which of the following is NOT true about fermentable fibers.
Student Response
Value
Feedback
A.
they provide calories to the consumer
B.
feeds microorganisms in the large intestine
C.
pass out in the feces
100%
Correct choice. Fermentable fibers are fermented into other products. They do not stay intact and pass into the feces.
D.
produces short chain fatty acids
Score:
1/1
8.
Which of the following is NOT true about glucose?
Student Response
Value
Feedback
A.
is the sugar that circulates in the blood
B.
is the most common monosaccharide
C.
commonly occurs in food as a monosaccharide
100%
Correct choice. Glucose does not commonly occur as a monosaccharide in food.
D.
is hydrophilic
Score:
1/1
9.
Which of the following is NOT true about insoluble fiber?
Student Response
Value
Feedback
A.
increases fecal mass
B.
is the structural or woody parts of plants
C.
accelerates transit of food through the GI
D.
causes chyme to become visous in the small intestine
100%
Correct choice. It is soluble fiber, not the insoluble fiber, that causes GI contents to become viscous.
Score:
1/1
10.
Which of the following is NOT a monosaccharide?
Student Response
Value
Feedback
A.
lactose
100%
Correct choice. Lactose is a disaccharide.
B.
glucose
C.
fructose
D.
galactose
Score:
1/1
11.
Which of the following is the polysaccharide found in animal tissue?
Student Response
Value
Feedback
A.
amylose
B.
starch
C.
glucagon
D.
glycogen
100%
Correct choice. Glycogen is the storage form of carbohydrate in animals.
Score:
1/1
12.
Which of the following is NOT true about prebiotics?
Student Response
Value
Feedback
A.
they include fermentable fiber
B.
they include oligosaccharides
C.
they include edible microorganisms
100%
Correct choice. Microorganisms are "probiotics" not prebiotics.
D.
they will cause the production of short chain fatty acids
Score:
1/1
13.
Which of the following is NOT an effect of soluble fiber?
Student Response
Value
Feedback
A.
delays stomach emptying
B.
decreased transit time of food through GI
100%
Correct choice. Soluble fiber increases transit time (makes things take longer)
C.
delays glucose absorption
D.
lowers blood cholesterol
Score:
1/1
14.
Which are the 2 tissues that must have glucose for energy?
Student Response
Value
Feedback
A.
brain and heart
B.
central nervous system and red blood cells
100%
Correct
C.
brain and duodenum
D.
central nervous system and skeletal muscle
Score:
1/1
15.
What is NOT true about the absorption and transport of glucose.
Student Response
Value
Feedback
A.
glucose is absorbed into the capillaries of the villus
B.
glucose is carried directly to the liver from the gut
C.
glucose is transported around the body via the circulatory system
0%
Incorrect
D.
glucose is carried to the liver via the hepatic artery
Score:
0/1
Title:Homework #10
Started:March 26, 2009 8:50 PM
Submitted:March 26, 2009 8:59 PM
Time spent:00:08:37
Total score:15/15 = 100% Total score adjusted by 0.0 Maximum possible score: 15
1.
Please match the digestion term with its decription
digestive enzyme that cuts fatty acids off of triglycerides
substance that helps break fat globs into small droplets
hydrophobic molecules surrounded by bile
molecule that binds some lipids and carries them out with it in feces
molecule that carries absorbed fat in lymph system
chylomicron
bile
pancreatic lipase
fiber
micelle
Statement
Response
Value
digestive enzyme that cuts fatty acids off of triglycerides
pancreatic lipase
20.0%
substance that helps break fat globs into small droplets
bile
20.0%
hydrophobic molecules surrounded by bile
micelle
20.0%
molecule that binds some lipids and carries them out with it in feces
fiber
20.0%
molecule that carries absorbed fat in lymph system
chylomicron
20.0%
Score:
5/5
2.
Please match the lipid term with its descriptor
Fatty acids that have no double bonds
Fatty acids that must be consumed in the diet
Fatty acids with more than one double bond
A hormone-like molecule made from omega 3 and 6 fatty acids
Fatty acids that have only one double bond
eicosanoid
saturated
polyunsaturated
essential
monounsaturated
Statement
Response
Value
Fatty acids that have no double bonds
saturated
20.0%
Fatty acids that must be consumed in the diet
essential
20.0%
Fatty acids with more than one double bond
polyunsaturated
20.0%
A hormone-like molecule made from omega 3 and 6 fatty acids
eicosanoid
20.0%
Fatty acids that have only one double bond
monounsaturated
20.0%
Score:
5/5
3.
Please match the type of lipid with its description.
3 fatty acids hooked to a glycerol
2 fatty acids and a phosphate on glycerol
a fat with a multiple ring structure
small essential molecules that travel in body associated with larger lipids
a type of fatty acid produced during hydrogenation
trans fat
cholesterol
phospholipid
triglyceride
fat soluble vitamins
Statement
Response
Value
3 fatty acids hooked to a glycerol
triglyceride
20.0%
2 fatty acids and a phosphate on glycerol
phospholipid
20.0%
a fat with a multiple ring structure
cholesterol
20.0%
small essential molecules that travel in body associated with larger lipids
fat soluble vitamins
20.0%
a type of fatty acid produced during hydrogenation
trans fat
20.0%
Score:
5/5
Title:Homework #11
Started:March 26, 2009 9:13 PM
Submitted:March 26, 2009 9:14 PM
Time spent:00:01:13
Total score:15/15 = 100% Total score adjusted by 0.0 Maximum possible score: 15
1.
Select the best word to fill in the blank
Not all fats are _________.
It is called ______ when lipids are deposited on artery walls.
Lipids travel in blood by being incorporated into a ____.
___ are also known as fats or oils.
___are produced as a normal product of fat metabolism, but get high in blood with a carbohydrate-free diet.
lipids
unhealthy
ketones
artherosclerosis
lipoprotein
Statement
Response
Value
Not all fats are _________.
unhealthy
20.0%
It is called ______ when lipids are deposited on artery walls.
artherosclerosis
20.0%
Lipids travel in blood by being incorporated into a ____.
lipoprotein
20.0%
___ are also known as fats or oils.
lipids
20.0%
___are produced as a normal product of fat metabolism, but get high in blood with a carbohydrate-free diet.
ketones
20.0%
Score:
5/5
2.
Please match the lipoprotein-related term to its descriptor
transports excess cholesterol back to liver
transports fat from liver to adipose
transports cholesterol to all tissues that need it
unloads triglyceride from Chylomicrons
substance in fruit and veggies that protects LDL from oxidation
lipoprotein lipase
HDL
antioxidants
VLDL
LDL
Statement
Response
Value
transports excess cholesterol back to liver
HDL
20.0%
transports fat from liver to adipose
VLDL
20.0%
transports cholesterol to all tissues that need it
LDL
20.0%
unloads triglyceride from Chylomicrons
lipoprotein lipase
20.0%
substance in fruit and veggies that protects LDL from oxidation
antioxidants
20.0%
Score:
5/5
3.
Please match the term with its descriptor
where fat is stored
part of the intestine where fat digestion takes place
process of breaking double bonds in a fatty acid by adding H
molecule used to store extra calories
where cholesterol is made
triglyceride
duodenum
hydrogenation
adipose
liver
Statement
Response
Value
where fat is stored
adipose
20.0%
part of the intestine where fat digestion takes place
duodenum
20.0%
process of breaking double bonds in a fatty acid by adding H
hydrogenation
20.0%
molecule used to store extra calories
triglyceride
20.0%
where cholesterol is made
liver
20.0%
Score:
5/5
Title:Homework #12
Started:February 27, 2009 10:25 PM
Submitted:February 27, 2009 10:29 PM
Time spent:00:03:57
Total score:15/15 = 100% Total score adjusted by 0.0 Maximum possible score: 15
1.
Please match the following to its descriptor
an amino acid that cannot be synthesized by the body
an amino acid that can be synthesized by the body in sufficient amounts to meet needs
an amino acid that can normally be made by the body but is not being made due to special circumstances
essential amino acid available in the lowest amount relative to the body's needs
essential amino acid
limiting amino acid
conditionally essential amino acid
non essential amino acid
Statement
Response
Value
an amino acid that cannot be synthesized by the body
essential amino acid
25.0%
an amino acid that can be synthesized by the body in sufficient amounts to meet needs
non essential amino acid
25.0%
an amino acid that can normally be made by the body but is not being made due to special circumstances
conditionally essential amino acid
25.0%
essential amino acid available in the lowest amount relative to the body's needs
limiting amino acid
25.0%
Score:
4/4
2.
Please match the following term with the descriptor
proteins are unique because they contain this element
these are the building blocks of protein
each amino acid had a different one of these and it determines that amino acid's chemical properties
the kind of bond that holds amino acids together to make a protein
occurs when proteins come in contact with heat, acid, a strong base or physical agitation
nitrogen
peptide
amino acids
side chain
denaturation
Statement
Response
Value
proteins are unique because they contain this element
nitrogen
20.0%
these are the building blocks of protein
amino acids
20.0%
each amino acid had a different one of these and it determines that amino acid's chemical properties
side chain
20.0%
the kind of bond that holds amino acids together to make a protein
peptide
20.0%
occurs when proteins come in contact with heat, acid, a strong base or physical agitation
denaturation
20.0%
Score:
5/5
3.
Please match the term with its descriptor
where protein digestion begins
process of synthesizing glucose from amino acids
end product of protein catabolism (a waste product)
organ that filters urea from the blood
where extra energy consumed in the form of protein is stored
the removal of an amino group from an amino acid
urea
adipose
kidney
gluconeogenesis
deamination
stomach
Statement
Response
Value
where protein digestion begins
stomach
16.66%
process of synthesizing glucose from amino acids
gluconeogenesis
16.66%
end product of protein catabolism (a waste product)
urea
16.66%
organ that filters urea from the blood
kidney
16.66%
where extra energy consumed in the form of protein is stored
adipose
16.66%
the removal of an amino group from an amino acid
deamination
16.7%
Score:
6/6
Title:Homework #13
Started:February 27, 2009 10:30 PM
Submitted:February 27, 2009 10:49 PM
Time spent:00:19:34
Total score:20/20 = 100% Total score adjusted by 0.0 Maximum possible score: 20
1.
Please match term with the appropriate descriptor.
the vitamin niacin and the neurotransmitter serotonin are made from this
a type of regulatory protein
these are hormones made of protein
dopamine and norepinephrine are made from this
this is made from the amino acid tyrosine
enzymes
amino acid tryptophan
amino acid tryosine
insulin and glucagon
skin pigment melanin
Statement
Response
Value
the vitamin niacin and the neurotransmitter serotonin are made from this
amino acid tryptophan
20.0%
a type of regulatory protein
enzymes
20.0%
these are hormones made of protein
insulin and glucagon
20.0%
dopamine and norepinephrine are made from this
amino acid tryosine
20.0%
this is made from the amino acid tyrosine
skin pigment melanin
20.0%
Score:
5/5
2.
Please match the term with the appropriate descriptor
section of DNA that codes for a protein chain
making DNA from DNA
making mRNA from DNA
making protein from mRNA
a 3 base code that determines the order amino acids will occur in a protein
transcription
codon
gene
translation
replication
Statement
Response
Value
section of DNA that codes for a protein chain
gene
20.0%
making DNA from DNA
replication
20.0%
making mRNA from DNA
transcription
20.0%
making protein from mRNA
translation
20.0%
a 3 base code that determines the order amino acids will occur in a protein
codon
20.0%
Score:
5/5
3.
Please match the term with the appropriate descriptor
the process of manipulating genes to change an organism
publication of the sequence of human genome
a common variation of the human gene sequence (>1% of population)
when inherited genes determine liklihood of getting a disease
basis of genetic code for the synthesis of proteins
human genome project
genetic engineering
deoxyribonucleic acid
genetic predisposition
polymorphism
Statement
Response
Value
the process of manipulating genes to change an organism
genetic engineering
20.0%
publication of the sequence of human genome
human genome project
20.0%
a common variation of the human gene sequence (>1% of population)
polymorphism
20.0%
when inherited genes determine liklihood of getting a disease
genetic predisposition
20.0%
basis of genetic code for the synthesis of proteins
deoxyribonucleic acid
20.0%
Score:
5/5
4.
Please match the term with its descriptor
protein making machinery of the cell
many amino acids bonded together
a high quality protein
when proteins are constantly broken down and resynthesized
when DNA is actively being used to make a protein
protein turnover
complete protein
gene expression
polypeptide
ribosome
Statement
Response
Value
protein making machinery of the cell
ribosome
20.0%
many amino acids bonded together
polypeptide
20.0%
a high quality protein
complete protein
20.0%
when proteins are constantly broken down and resynthesized
protein turnover
20.0%
when DNA is actively being used to make a protein
gene expression
20.0%
Score:
5/5
Title:Homework 14
Started:March 28, 2009 1:56 PM
Submitted:March 28, 2009 1:59 PM
Time spent:00:02:48
Total score:18/20 = 90% Total score adjusted by 0.0 Maximum possible score: 20
1.
Pleae match the nutrient with the appropriate descriptor
Cofactor for enzyme glutathione peroxidase
Cofactor for enzyme Superoxide Dismutase in cytosol
Cofactor for Enzyme Catalase
Precursor for Vitamin A
Cofactor for enzyme Superoxide Dismutase in the mitochondria
Iron
Selenium
Beta-Carotene
Copper and Zinc
Manganese
Statement
Response
Value
Cofactor for enzyme glutathione peroxidase
Selenium
20.0%
Cofactor for enzyme Superoxide Dismutase in cytosol
Copper and Zinc
20.0%
Cofactor for Enzyme Catalase
Iron
20.0%
Precursor for Vitamin A
Beta-Carotene
20.0%
Cofactor for enzyme Superoxide Dismutase in the mitochondria
Manganese
20.0%
Score:
5/5
2.
Please match the term with the appropriate descriptor
another name for vitamin C
another name for vitamin E
this vitamin protects the lipid parts of the body from free radicals
this vitamin protects the water parts of the body from free radicals
these get rid of ROS and capture free radicals
Vitamin E
antioxidants
ascorbic acid
Vitamin C
tocopherol
Statement
Response
Value
another name for vitamin C
ascorbic acid
20.0%
another name for vitamin E
tocopherol
20.0%
this vitamin protects the lipid parts of the body from free radicals
Vitamin E
20.0%
this vitamin protects the water parts of the body from free radicals
Vitamin C
20.0%
these get rid of ROS and capture free radicals
antioxidants
20.0%
Score:
5/5
3.
Please match the term with the appropriate descriptor
a normal byproduct of aerobic metabolism
the first stage in the free radical chain reaction
when a lipid radical attacks a nearby lipid turning it into a free radical
a precursor molecule to a free radical
oxygen can sometime gain one of these and become a free radical
electron
propagation
free radical
initiation
reactive oxygen species (ROS)
Statement
Response
Value
a normal byproduct of aerobic metabolism
free radical
20.0%
the first stage in the free radical chain reaction
initiation
20.0%
when a lipid radical attacks a nearby lipid turning it into a free radical
propagation
20.0%
a precursor molecule to a free radical
reactive oxygen species (ROS)
20.0%
oxygen can sometime gain one of these and become a free radical
electron
20.0%
Score:
5/5
4.
Please match the phytochemical with its descriptor
a plant substance that may have health-promoting properties
a family of food pigments that act as antioxidants
a phytochemical in fruits and veggies believed to supress tumor growth, prevent blood clots and be anti-inflammatory
an estrogen-like molecule produced by plants
a carotenoid that gives red color to tomatoes
lycopene
phytochemical
flavonoids
phytoestrogen
carotenoids
Statement
Response
Value
a plant substance that may have health-promoting properties
phytoestrogen
0.0%
a family of food pigments that act as antioxidants
carotenoids
20.0%
a phytochemical in fruits and veggies believed to supress tumor growth, prevent blood clots and be anti-inflammatory
flavonoids
20.0%
an estrogen-like molecule produced by plants
phytochemical
0.0%
a carotenoid that gives red color to tomatoes
lycopene
20.0%
Score:
3/5
Title:Homework 15
Started:March 28, 2009 2:19 PM
Submitted:March 28, 2009 2:29 PM
Time spent:00:09:43
Total score:19/20 = 95% Total score adjusted by 0.0 Maximum possible score: 20
1.
Which of the following is correct?
Student Response
Value
A.
Both Vitamin E and Vitamin C work in the lipid membranes of the cell
B.
Both Vitamin E and Vitamin C work in the aqueous or water part of the cell
C.
Vitamin C works in the lipid membrane and Vitamin E works in the aqueous solution of the cell
D.
Vitamin E works in the lipid membrane and Vitamin C works in the aqueous solution of the cell
100%
Score:
1/1
2.
Which of the following is NOT a mineral that functions as a cofactor for an antioxidant enzyme?
Student Response
Value
A.
Iron (Fe)
B.
Iodine (I)
100%
C.
Copper (Cu)
D.
Manganese (Mn)
Score:
1/1
3.
Which of the following is NOT true about carotenoids.
Student Response
Value
A.
They are a family of pigments.
B.
They are more easily absorbed from cooked food than from raw food.
C.
The are found in orange and yellow fruits and vegetables.
D.
They stop free radical reactions in the aqueous part of the cell.
100%
Score:
1/1
4.
Which mineral can be a pro-oxidant as well as an anti-oxidant?
Student Response
Value
A.
Copper (Cu)
0%
B.
Zn
C.
Selenium (Se)
D.
Iron (Fe)
Score:
0/1
5.
Which of these steps is NOT part of the free radical chain reaction?
Student Response
Value
A.
Initiation
B.
Propagation
C.
Escalation
100%
D.
All of the above are steps in the free radical chain reaction.
Score:
1/1
6.
Which of the following does NOT significantly increase your need for antioxidant nutrients?
Student Response
Value
A.
High saturated fat consumption
100%
B.
High alcohol consumption
C.
High prescription drug usage
D.
High recreational drug usage
E.
Chronic infection
Score:
1/1
7.
Which of the following conditions is NOT associated with free radical damage?
Student Response
Value
A.
Aging
B.
Type I Diabetes
100%
C.
Cancer
D.
Atherosclerosis
Score:
1/1
8.
Which of the following is NOT true about phytochemicals?
Student Response
Value
A.
They are naturally occuring in plants.
B.
High concentrations can be toxic
C.
Because they are naturally occuring they are always safe to eat
100%
D.
They include both carotenoids and phytoestrogens.
Score:
1/1
9.
Which of the following statements is true?
Student Response
Value
A.
Free radicals are produced only by unnatural compounds in the environment but antioxidants are naturally found in many fruits and vegetables
B.
Free radicals are produced as part of natural cell processes but the antioxidants we need to combat them must be produced in a laboratory
C.
Free radicals are produced as part of natural cell processes and antioxidants are naturally found in many fruits and vegetables
100%
D.
Free radicals are produced only by unnatural compounds in the environment but the antioxidants we need to combat them must be produced in a laboratory
Score:
1/1
10.
What happens to food if it is subject to free radical damage?
Student Response
Value
A.
It becomes poisonous
B.
It becomes denatured
C.
It becomes solublized
D.
It becomes rancid
100%
Score:
1/1
11.
Which of the following is NOT a Reactive Oxygen Species (ROS)?
Student Response
Value
A.
Superoxide
B.
Hydrogen peroxide
C.
Singlet oxygen
D.
Tocopherol radical
100%
Score:
1/1
12.
Which mineral is NOT a cofactor for Super Oxide Dismutase (SOD)?
Student Response
Value
A.
Se
100%
B.
Mn
C.
Zn
D.
Cu
Score:
1/1
13.
Which of the following molecules is not very suseptable to free radical damage?
Student Response
Value
A.
Lipid
B.
Proteins
C.
Carbohydrates
100%
D.
Nucleic Acids
Score:
1/1
14.
Waht does synergistic activity mean?
Student Response
Value
A.
Compounds working together so that the total effect is greater than the sum of the individual compounds
100%
B.
Compounds working against each other
C.
One compound working to destroy another compound
D.
The ability to do work
Score:
1/1
15.
Which of the following statements about the synergistic relationship between water soluble and fat soluble antioxidants is NOT true.
Student Response
Value
A.
Water soluble antioxidants take care reactive oxygen species (ROS) in the cytoplasm and watery interior of the organelles and the lipid soluble antioxidants take care of ROS in all the membranes.
B.
The water soluble antioxidant nutrients Vitamin C is involved in the regeneration of Vitamin E to its active form.
C.
If you eat plenty of vitamin C it will help you to also maintain adequate amounts of the active form of vitamin E in your tissues.
D.
All three of the above statements are true
100%
Score:
1/1
16.
Which antioxidant nutrient gets rid of both ROS and free radicals?
Student Response
Value
A.
Vitamin E
B.
Iron
C.
Zinc
D.
Vitamin C
100%
Score:
1/1
17.
Select the best answer. Which of the following occur(s) with Vitamin C deficiency?
Student Response
Value
A.
The protein collagen cannot be synthesized and maintained
B.
Increased tissue damage from free radicals
C.
Weakened blood vessels that lead to bleeding
D.
All of these occur with Vitamin C deficiency
100%
Score:
1/1
18.
Which of the following in NOT true about vitamin E.
Student Response
Value
A.
Vitamin E is found only in your liver.
100%
B.
Active Vitamin E is regenerated by Vitamin C
C.
Vitamin E protects the lipids in your cell membranes from oxidative damage.
D.
Vitamin E protects the lipids in LDL cholesterol from oxidative damage.
Score:
1/1
19.
What must happen to a vitamin E molecule after it neutralizes a free radical?
Student Response
Value
A.
It must keep on neutraliziang free radicals
B.
It must be regenerated by Vitamin C to continue working as an antioxidant
100%
C.
It must be regenerated by Iron to continue working as an antioxidant
D.
It must be regenerated by Beta-carotene to continue working as an antioxidant
Score:
1/1
20.
Which of the following antioxidant nutrients does NOT work in the aqueous (water) parts of the body?
Student Response
Value
A.
Vitamin C
B.
Vitamin E
100%
C.
Selenium
D.
Zinc
Score:
1/1
Title:Homework 16
Started:March 29, 2009 4:21 PM
Submitted:March 29, 2009 4:22 PM
Time spent:00:01:11
Total score:20/20 = 100% Total score adjusted by 0.0 Maximum possible score: 20
1.
Please match the correct description to the BMI that is provided
BMI of 17
BMI of 37
BMI of 28
BMI of 23
What is BMI
A measure of weight for height
Healthy Weight
Underweight
Obese
Overweight
Statement
Response
Value
BMI of 17
Underweight
20.0%
BMI of 37
Obese
20.0%
BMI of 28
Overweight
20.0%
BMI of 23
Healthy Weight
20.0%
What is BMI
A measure of weight for height
20.0%
Score:
5/5
2.
Please match the term with the appropriate descriptor
determining energy expediture by measuring heat production
determining energy expenditure by measuring CO2 expelled and O2 consumed
the heat released by burning a food is equivalent to this
this form of energy is captured in ATP
energy releasing reactions in which substances are broken down
direct calorimetry
indirect calorimetry
energy contained in chemical bonds
catabolic
chemical energy
Statement
Response
Value
determining energy expediture by measuring heat production
direct calorimetry
20.0%
determining energy expenditure by measuring CO2 expelled and O2 consumed
indirect calorimetry
20.0%
the heat released by burning a food is equivalent to this
energy contained in chemical bonds
20.0%
this form of energy is captured in ATP
chemical energy
20.0%
energy releasing reactions in which substances are broken down
catabolic
20.0%
Score:
5/5
3.
Please match the term with the appropriate descriptor.
value used to calculate energy content of carbs and proteins
value used to calculate energy content of fats
value used to calculate the energy content of alcohol
the unit of work
the unit of heat
kilojoule
9 kcal/g
kilocalorie
4 kcal/g
7 kcal/g
Statement
Response
Value
value used to calculate energy content of carbs and proteins
4 kcal/g
20.0%
value used to calculate energy content of fats
9 kcal/g
20.0%
value used to calculate the energy content of alcohol
7 kcal/g
20.0%
the unit of work
kilojoule
20.0%
the unit of heat
kilocalorie
20.0%
Score:
5/5
4.
Please match the term with the appropriate descriptor
the fat found around internal organs
the feeling of fullness
hormone produced by fat cells
when someone doesn't eat for a period of hours or days
when food intake is severely reduced over a long period of time
starvation
satiety
visceral fat
leptin
fasting
Statement
Response
Value
the fat found around internal organs
visceral fat
20.0%
the feeling of fullness
satiety
20.0%
hormone produced by fat cells
leptin
20.0%
when someone doesn't eat for a period of hours or days
fasting
20.0%
when food intake is severely reduced over a long period of time
starvation
20.0%
Score:
5/5
Title:Homework 17
Started:March 29, 2009 4:22 PM
Submitted:March 29, 2009 4:25 PM
Time spent:00:03:12
Total score:15/15 = 100% Total score adjusted by 0.0 Maximum possible score: 15
1.
Identify what will happen under the various situations related to the energy balance equation.
Energy In> BMR + TEF + PA
Energy In< BMR + TEF + PA
Energy In= BMR + TEF + PA
An increase in lean body mass
A single bout of exercise
will cause an on-going increase in BMR
will cause a one-time increase in PA
negative energy balance, energy is taken out of fat storage
Energy balance, since energy consumed equals energy expended fat stores stay the same
positive energy balance, the extra energy goes into fat storage
Statement
Response
Value
Energy In> BMR + TEF + PA
positive energy balance, the extra energy goes into fat storage
20.0%
Energy In< BMR + TEF + PA
negative energy balance, energy is taken out of fat storage
20.0%
Energy In= BMR + TEF + PA
Energy balance, since energy consumed equals energy expended fat stores stay the same
20.0%
An increase in lean body mass
will cause an on-going increase in BMR
20.0%
A single bout of exercise
will cause a one-time increase in PA
20.0%
Score:
5/5
2.
Please match the term with the appropriate descriptor
the minimum amount of energy that the body needs to maintain itself
the part of the body that is not made of fat or bone
the energy required for the digestion and processing of food
the metabolic cost of external work (exercise and functions of dailiy life)
what is usually measured instead of BMR due to the inconvenience of measuring BMR
Lean body mass (LBM)
Physical Activity (PA)
Thermic effect of food (TEF)
Resting metabolic rate (RMR)
Basal metabolic rate (BMR)
Statement
Response
Value
the minimum amount of energy that the body needs to maintain itself
Basal metabolic rate (BMR)
20.0%
the part of the body that is not made of fat or bone
Lean body mass (LBM)
20.0%
the energy required for the digestion and processing of food
Thermic effect of food (TEF)
20.0%
the metabolic cost of external work (exercise and functions of dailiy life)
Physical Activity (PA)
20.0%
what is usually measured instead of BMR due to the inconvenience of measuring BMR
Resting metabolic rate (RMR)
20.0%
Score:
5/5
3.
Match the term with the appropriate descriptor
the body cannot store this macronutrient in this form
the body stores glucose in this form so that it can regenerate it later
the body stores this in adipose tissue
an energy requiring reaction that combines simple molecules into more complex molecules
this compound is a normal part of the catabolism of fat
anabolic
glycogen
ketone
fat
protein
Statement
Response
Value
the body cannot store this macronutrient in this form
protein
20.0%
the body stores glucose in this form so that it can regenerate it later
glycogen
20.0%
the body stores this in adipose tissue
fat
20.0%
an energy requiring reaction that combines simple molecules into more complex molecules
anabolic
20.0%
this compound is a normal part of the catabolism of fat
ketone
20.0%
Score:
5/5
Title:Homework 18
Started:March 29, 2009 4:53 PM
Submitted:March 29, 2009 5:02 PM
Time spent:00:08:30
Total score:15/15 = 100% Total score adjusted by 0.0 Maximum possible score: 15
1.
Please match the appropriate term with its descriptor
Ability to perform routine exercise without fatigue
Cardiorespiratory endurance is increased by this
Endurance exercise increases these
The greater the VO2 max, the more intense an activity can be engaged in before lack of ______ affects performance
Muscle strenght is increased by repeatedly engaging in exercise moving against a______
This determines range of motion
Those who are physically fit have a greater proportion of this
Lean body mass can be assessed by measuring this
lean body mass
% body fat
fitness
flexibility
resisting force
volume and V02 max
oxygen
aerobic exercise
Statement
Response
Value
Ability to perform routine exercise without fatigue
fitness
12.5%
Cardiorespiratory endurance is increased by this
aerobic exercise
12.5%
Endurance exercise increases these
volume and V02 max
12.5%
The greater the VO2 max, the more intense an activity can be engaged in before lack of ______ affects performance
oxygen
12.5%
Muscle strenght is increased by repeatedly engaging in exercise moving against a______
resisting force
12.5%
This determines range of motion
flexibility
12.5%
Those who are physically fit have a greater proportion of this
lean body mass
12.5%
Lean body mass can be assessed by measuring this
% body fat
12.5%
Score:
8/8
2.
Please indicate the mechanism by which exercise has the following health benefits:
Maintenance of healthy body weight by
Reduce risk of cardiovascular disease by
Reduced risk of type II diabetes by
Reduce joint disorders by
Mood elevation by
Allow you to better burn fat for energy by
Reduce risk of osteoporosis by
reducing insulin resistance
increasing lean tissue
increasing strength and felxibility
releasing endorphins
increasing muscle cell mitochondria
increasing bone mass
lowering blood pressure
Statement
Response
Value
Maintenance of healthy body weight by
increasing lean tissue
14.28%
Reduce risk of cardiovascular disease by
lowering blood pressure
14.28%
Reduced risk of type II diabetes by
reducing insulin resistance
14.28%
Reduce joint disorders by
increasing strength and felxibility
14.28%
Mood elevation by
releasing endorphins
14.28%
Allow you to better burn fat for energy by
increasing muscle cell mitochondria
14.28%
Reduce risk of osteoporosis by
increasing bone mass
14.32%
Score:
7/7
Title:Homework 19
Started:March 29, 2009 5:15 PM
Submitted:March 29, 2009 5:18 PM
Time spent:00:02:20
Total score:24/24 = 100% Total score adjusted by 0.0 Maximum possible score: 24
1.
Please match the condition with the descriptor
Depleting glycogen stores and then replenishing a few days before a competition
Caused by low body estrogen combined with low calcium intake
Condition caused by unreplaced water losses
Interrelated disorders common in female athletes
Caused by too little blood to both cool the body and deliver oxygen
When the temperature regulatory center of the brain fails
osteoporosis
heat exhaustion
female athelete triad
dehydration
glycogen loading
heat stroke
Statement
Response
Value
Depleting glycogen stores and then replenishing a few days before a competition
glycogen loading
16.66%
Caused by low body estrogen combined with low calcium intake
osteoporosis
16.66%
Condition caused by unreplaced water losses
dehydration
16.66%
Interrelated disorders common in female athletes
female athelete triad
16.66%
Caused by too little blood to both cool the body and deliver oxygen
heat exhaustion
16.66%
When the temperature regulatory center of the brain fails
heat stroke
16.7%
Score:
6/6
2.
Please match the term with the appropriate descriptor
Source of energy for all body functions
Compound found in muscle that can regenerate ATP
What is needed to generate ATP beyond 15 seconds worth
Produces ATP via electron transport chain
Produces ATP via glycolysis only
By-product of anaerobic metabolism
Molecule required to transport fatty acids into mitochondria
Daily energy deficit that will allow for weight loss but preserve lean body mass
ATP
lactic acid
carnitine
aerobic metabolism
300-500 kcal
anaerobic metabolism
electron transport
creatine phosphate
Statement
Response
Value
Source of energy for all body functions
ATP
12.5%
Compound found in muscle that can regenerate ATP
creatine phosphate
12.5%
What is needed to generate ATP beyond 15 seconds worth
electron transport
12.5%
Produces ATP via electron transport chain
aerobic metabolism
12.5%
Produces ATP via glycolysis only
anaerobic metabolism
12.5%
By-product of anaerobic metabolism
lactic acid
12.5%
Molecule required to transport fatty acids into mitochondria
carnitine
12.5%
Daily energy deficit that will allow for weight loss but preserve lean body mass
300-500 kcal
12.5%
Score:
8/8
3.
Pleae match the ergogenic aid with its descriptor
supplement to improve insulin action
vitamin critical for protein metabolism
vitamin that is part of the energy carrier NADH
vitamin that is part of coenzyme A used to make acetyl CoA
vitamin that is promoted to combat free radicals produced by electron transport chain
vitamin that is part of the energy carrier FADH2
vitamin that is necessary to make DNA and a deficiency can result in anemia
supplement taken to increae energy stores in muscle
supplement taken to improve ability to burn fat for energy
dangerous supplement that mimics the affect of the hormone adrenaline
folate
niacin
vitamin C
creatine
ephedrine
B6
riboflavin
chromium picolinate
panothenic acid
carnitine
Statement
Response
Value
supplement to improve insulin action
chromium picolinate
10.0%
vitamin critical for protein metabolism
B6
10.0%
vitamin that is part of the energy carrier NADH
niacin
10.0%
vitamin that is part of coenzyme A used to make acetyl CoA
panothenic acid
10.0%
vitamin that is promoted to combat free radicals produced by electron transport chain
vitamin C
10.0%
vitamin that is part of the energy carrier FADH2
riboflavin
10.0%
vitamin that is necessary to make DNA and a deficiency can result in anemia
folate
10.0%
supplement taken to increae energy stores in muscle
creatine
10.0%
supplement taken to improve ability to burn fat for energy
carnitine
10.0%
dangerous supplement that mimics the affect of the hormone adrenaline
ephedrine
10.0%
Score:
10/10
Title:Homework 20
Started:March 29, 2009 5:34 PM
Submitted:March 29, 2009 5:45 PM
Time spent:00:10:34
Total score:17/17 = 100% Total score adjusted by 0.0 Maximum possible score: 17
1.
Please match the microorganism with its descriptor.
Found in raw meats, poultry, eggs, milk and dairy products
The leading cause of bactrial diarrhea in the US
Pregnant women should cook deli meats to avoid being sickened by this
Found in the throat of humans and transferred to food through sneezes and coughs
Found in improperly canned foods and honey
Found in the feces of animals and a common contaminant of ground beef
Found in oysters, clams and crabs
salmonella
vibro vulnificus
clostridium botulinum (botulism)
staphlyococcus aureus (staph)
listeria monocytogenes (listeria)
campylobacter jejuni
E. coli
Statement
Response
Value
Found in raw meats, poultry, eggs, milk and dairy products
salmonella
14.28%
The leading cause of bactrial diarrhea in the US
campylobacter jejuni
14.28%
Pregnant women should cook deli meats to avoid being sickened by this
listeria monocytogenes (listeria)
14.28%
Found in the throat of humans and transferred to food through sneezes and coughs
staphlyococcus aureus (staph)
14.28%
Found in improperly canned foods and honey
clostridium botulinum (botulism)
14.28%
Found in the feces of animals and a common contaminant of ground beef
E. coli
14.28%
Found in oysters, clams and crabs
vibro vulnificus
14.32%
Score:
7/7
2.
Please match the term with the appropriate descriptor.
Type of illness from eating food contaminated with a toxin or microorganism
A substance that can cause harm at some level of exposure
An organism capable of causing disease
The transfer of a contaminant from one food to another
When the symptoms of illness are caused by the toxin, not the microorganism itself
A type of additive used to prevent oxidation or rancidity
A type of additive used to prevent micriobial growth by reducing water activity
A food preservation technique that works by reducing water activity
A food preservation techniques that works by making the food too acidic for bacterial growth
A food preservation technique historically used to preserve fruits
antioxidant nutrients
intoxication
drying
salt
toxin
foodborne
cross-contamination
heavily sugaring
pickling
pathogen
Statement
Response
Value
Type of illness from eating food contaminated with a toxin or microorganism
foodborne
10.0%
A substance that can cause harm at some level of exposure
toxin
10.0%
An organism capable of causing disease
pathogen
10.0%
The transfer of a contaminant from one food to another
cross-contamination
10.0%
When the symptoms of illness are caused by the toxin, not the microorganism itself
intoxication
10.0%
A type of additive used to prevent oxidation or rancidity
antioxidant nutrients
10.0%
A type of additive used to prevent micriobial growth by reducing water activity
salt
10.0%
A food preservation technique that works by reducing water activity
drying
10.0%
A food preservation techniques that works by making the food too acidic for bacterial growth
pickling
10.0%
A food preservation technique historically used to preserve fruits
heavily sugaring
10.0%
Score:
10/10
Title:Homework 21
Started:March 29, 2009 5:51 PM
Submitted:March 29, 2009 5:54 PM
Time spent:00:02:09
Total score:23/23 = 100% Total score adjusted by 0.0 Maximum possible score: 23
1.
Please match the term with its descriptor.
Biotechnology may harm the environment this way
When 2 related plants are cross-fertilized to yield offspring with characteristics of both
When closely related animals are bred to intensify desirable traits
When unrelated animals are bred to reduce undesirable traits
Results when DNA is inserted into the DNA of a plant or animal
Biotechnology may negatively affect food in this way
A potential benefit of biotechnology that will increase crop yield
The federal agencies that oversee genetically engineered products
A potential benefit of biotechnology that will improve food quality
Loop of bacterial DNA used to insert the gene of interest into a plant or animal
Scientific techniques that use genetic engineering to improve plants and animals
Benefit of biotechnology over traditional breeding
A potential benefit of biotechnology that will improve the nutritional quality of food
inbreeding
outbreeding
reduce biodiversity
biotechnology
plasmid
impart disease resistance
recombinant DNA
introduce genes to make fruits and vegetables tastier
faster and more powerful
hybridization
FDA, USDA and EPA
introduce genes for allergens into foods that don't normally contain them
introduce genes for nutrients that are commonly deficient in the diet
Statement
Response
Value
Biotechnology may harm the environment this way
reduce biodiversity
7.69%
When 2 related plants are cross-fertilized to yield offspring with characteristics of both
hybridization
7.69%
When closely related animals are bred to intensify desirable traits
inbreeding
7.69%
When unrelated animals are bred to reduce undesirable traits
outbreeding
7.69%
Results when DNA is inserted into the DNA of a plant or animal
recombinant DNA
7.69%
Biotechnology may negatively affect food in this way
introduce genes for allergens into foods that don't normally contain them
7.69%
A potential benefit of biotechnology that will increase crop yield
impart disease resistance
7.69%
The federal agencies that oversee genetically engineered products
FDA, USDA and EPA
7.69%
A potential benefit of biotechnology that will improve food quality
introduce genes to make fruits and vegetables tastier
7.69%
Loop of bacterial DNA used to insert the gene of interest into a plant or animal
plasmid
7.69%
Scientific techniques that use genetic engineering to improve plants and animals
biotechnology
7.69%
Benefit of biotechnology over traditional breeding
faster and more powerful
7.69%
A potential benefit of biotechnology that will improve the nutritional quality of food
introduce genes for nutrients that are commonly deficient in the diet
7.7200003%
Score:
13/13
2.
Please match the term with the appropriate descriptor.
What turns fruits and vegetables brown
Bacteria grow most rapidly between these temperatures
Bacteria grow most rapidly at this pH
The amount of water available for chemical reactions
Most bacteria require oxygen for survival and growth and so are called this
Chemical substances added specifically to maintain freshness and inhibit the growth of microorganisms
A process in which foods are exposed to radiant energy to kill contaminating organisms and to retard ripening and spoilage
A substance intentionally added to food is called this
These act as antioxidants to prevent ranciditiy in foods
Most microbes need this nutrient for growth
6.0-7.5
additive
aerobic
preservatives
water activity
BHA and BHT
40-140
protein
irradiation
oxidation
Statement
Response
Value
What turns fruits and vegetables brown
oxidation
10.0%
Bacteria grow most rapidly between these temperatures
40-140
10.0%
Bacteria grow most rapidly at this pH
6.0-7.5
10.0%
The amount of water available for chemical reactions
water activity
10.0%
Most bacteria require oxygen for survival and growth and so are called this
aerobic
10.0%
Chemical substances added specifically to maintain freshness and inhibit the growth of microorganisms
preservatives
10.0%
A process in which foods are exposed to radiant energy to kill contaminating organisms and to retard ripening and spoilage
irradiation
10.0%
A substance intentionally added to food is called this
additive
10.0%
These act as antioxidants to prevent ranciditiy in foods
BHA and BHT
10.0%
Most microbes need this nutrient for growth
protein
10.0%
Score:
10/10
QUIZZES
Title:Quiz #1
Started:March 23, 2009 7:53 PM
Submitted:March 23, 2009 7:56 PM
Time spent:00:02:58
Total score:15/15 = 100% Total score adjusted by 0.0 Maximum possible score: 15
1.
Which of the following statements are false.
Student Response
Value
A.
Animals used in research are protected by the Institutional Review Board, which assures that they don't suffer unnecessarily and that they receive proper care.
100%
B.
Animals can be used as a substitute for humans when it is not practical to experiment on humans.
C.
There are scientists who perform nutrition studies on animals in order to learn more about the nutritional needs of that species.
D.
The rat is not always the best choice of animal to use to investigate a human nutrition problem.
Score:
1/1
2.
Which of the following is NOT a type of experimental control to reduce bias?
Student Response
Value
A.
Using a double-blind design.
B.
Randomly assigning subjects to groups.
C.
Using a placebo.
D.
Using independent variables.
100%
Score:
1/1
3.
The number of covalent bonds is dependant upon which of the following?
Student Response
Value
A.
An atom having a partial charge.
B.
An atom being hydrophobic.
C.
The number of electrons needed to fill the outer shell.
100%
D.
The molecular weight of the atoms involved.
Score:
1/1
4.
Which of the following would NOT lend credibility to a nutrition claim?
Student Response
Value
A.
It is consistent with your understanding of physiology.
B.
It is reported by an organization that does not appear to benefit financially.
C.
The information and its implications were explained by a scientist.
D.
There are many convincing testimonials to support the nutrition claim.
100%
E.
The results were reported in a peer-reviewed journal.
Score:
1/1
5.
Which of the following is NOT true about a hypothesis?
Student Response
Value
A.
It is often developed based on previous observation.
B.
It must be true.
100%
C.
May lead to the development of a theory if supported by experimental evidence.
D.
It must be testable.
Score:
1/1
6.
Which of the following is NOT true about Oxidation and Reduction reactions.
Student Response
Value
A.
Oxidation includes any chemical reaction in which oxygen accepts an electron.
100%
B.
The atom that transfers the electron is said to be "oxidized."
C.
The atom that accepts the electron is said to be "reduced."
D.
Oxidation and reduction reactions occur simultaneously.
Score:
1/1
7.
Which of the following is NOT true about pH.
Student Response
Value
A.
A solution with a higher pH has more H+ ions.
100%
B.
A lower pH is associated with greater acidity.
C.
A higher pH is associated with greater OH- ions.
D.
The job of a buffer is to control the amount of H+ ions so that the pH doesn't change.
Score:
1/1
8.
Which of the following statements about POLARITY is NOT true?
Student Response
Value
A.
It allows for some compounds to be solubilized in water.
B.
Non-polar compounds are attracted to each other, i.e. oil and water
100%
C.
Charged particles are attrached to polar particles.
D.
Polarity causes large molecules to allign in a certain way so that the negative charges are nestled next to positive charges.
Score:
1/1
9.
Which of the following is NOT true about precipitation-solution reactions.
Student Response
Value
A.
Some compounds will not go into solution because they are too unlike the solvent.
B.
Some compounds will not go into solution because there is too much of the compound and the solution is "saturated."
C.
Some compounds can fall out of solution or "precipitate" to the bottom of the solution.
D.
A "precipitate" is a compound that is dissolved in solution.
100%
Score:
1/1
10.
Which of the following statements is consistent with a test for reliability?
Student Response
Value
A.
Each measure of mass was taken 3 times to make sure that it yielded the same value.
100%
B.
Each measure of mass was determined to be accurate by comparing it to the mass as measured by an accepted method.
C.
Each measure of mass can be measured accurately to the nearests 0.001 g.
D.
Each measure of mass is correlated to the density of the object.
Score:
1/1
11.
Which of the following would NOT be an appropriate goal when conducting an experiment.
Student Response
Value
A.
Publish your results in a peer-reviewed journal.
B.
To reveal new results every time you conduct the experiment.
100%
C.
To test your hypothe