LIFE - Plainview...Life functions are needed to keep a stable or constant environment with in a...
Transcript of LIFE - Plainview...Life functions are needed to keep a stable or constant environment with in a...
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LIFE FUNCTIONS
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•Meet Mr. Stranger!
•You will learn the 10 life functions and their definitions.
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Life Functions
Life functions are needed to keep a stable or constant environment with in a living thing.
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Metabolism• All of the chemical activities
happening in your body.
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Respiration
• Turning food into energy
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Respiration: releases the chemical energy stored in nutrients.
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Synthesis• Turning the raw materials from your food into
needed materials.
– Simple substances are combined To form complex substance
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This is Synthesis
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Transport• Moving and
distributing materials throughout the body.
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Reproduction• Making more of your own
species.
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Reproduction: 2 Types:
Sexual Reproduction:
2 parents make a unique individual.
*1/2 genes from mom
*½ genes from dad
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• Asexual reproduction requires one parent cell and offspring are identical to the original.
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Absorption
• Incorporating the materials from your
food into your body parts (in order to grow
or heal).
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Nutrition
Obtaining
raw
materials
for….
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Heterotrophic Autotrophic
• Ingestion =eat
• Digestion =break down
• Egestion =GET RID OF Feces(POOP)
2 Types
Photosynthesis
SUN FOOD
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Heterotroph or Autotroph?
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Heterotroph or Autotroph?
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Growth• To get larger
(using raw materials to make a larger body).
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Excretion• Expelling toxic wastes from the body.
CO2, URINE, SWEAT
Carbon Dioxide
Urea
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Regulation
Time
Bo
dy
Te
mp
eratu
re
• Maintaining Homeostasis
an internal balance.
37
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Danger Zone
Danger Zone
Time
TE
MP
ER
AT
UR
E
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Regulation– Staying out of danger (reflexes)
– Constant body temperature (Nervous system)
– Constant water level (Excretory system)
– Constant blood sugar level (Endocrine System)
– Constant blood pressure (Nervous System)
Time
Blo
od S
ug
ar
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Which Life Function Is It?
TransportRegulation
Excretion
Nutrition
Excretion
Reproduction
SynthesisNutrition
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The body temperature of a runner increases. The runner responds by perspiring, which lowers body temperature. This process is an example of….
1. maintenance of homeostasis
2. transport
3. locomotion
4. reproduction
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If a human system fails to function properly, what is the most likely result?
1. a stable rate of metabolism
2. a disturbance in homeostasis
3. a change in the method of respiration
4. a change in the DNA
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Which life process is classified as autotrophic in some organisms and heterotrophic in other organisms?
1. hormonal regulation
2. nutrition
3. anaerobic respiration
4. transport
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When an individual goes without eating for a day, his or her blood sugar level remains about the same throughout the day. This relatively constant condition is maintained by……
1. regulation
2. egestion
3. reproduction
4. growth of cells
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Describe the difference:
• Sexual and Asexual
• Autotrophic and Heterotrophic