Unit II Written Response...
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Transcript of Unit II Written Response...
Unit II Written Response Set-Up
• On the next blank page in your notebook, put the title “Unit II Written Responses”
– If your title page is the front of a page, skip the back of the page and the front of the next page
– If your title page is the back of a page, skip the next front and back of the page.
• Put the title “Unit II Notes”
Written Response #1: What are the following molecules made up of?
• O2:
• C9H8O4:
• C8H10N4O2:
Written Response #2 – pH Scale
• Draw a diagram of the pH scale. Make sure you include the following:
– Scale (numbers 1-14)
– Label and color the following on your diagram:
• strong acid (red) , weak acid (pink), neutral (green), weak base (light blue), strong base (dark blue)
– Add an example of the following on your diagram:
• strong acid, weak acid, neutral, weak base and strong base (make sure to include the specific pH of your examples)
Lab: pH
1. Make predictions about the materials you will be testing today.
2. Complete the lab by using pH paper to determine the pH and identity of substances.
3. Complete the graph and answer the questions.
4. When you are finished, work on the following:a. Imaginary Organism (if still not finished)
b. Vocabulary activity – due Thursday
c. Study your root words for quiz tomorrow
Written Response #3 – Organic or Inorganic
• Number from 1 to 7
• For each molecule, determine whether it is organic or inorganic.
1.
2.
3.
4.
5.
6.
7.
WR #4: How are starch and simple sugars
related?
Carbohydrates Model - Activity
Written Response #5: What Should I Eat?
For each of the scenarios below, choose between simple sugars, starches or lipids:
1. I want to swim 50 miles
2. I want to run the 100 meter dash
3. I want to prepare to live on a deserted island with little to no food (long term energy storage)
Written Response #6: Which Organic Molecule?
Carbohydrates Lipids
Proteins Nucleic Acids
Iodine
Benedict’s
No test
Fatty acids
Nucleotide
Sugars
Amino acids
Control genes
Brown paper bag
Starch
Glucose
Enzymes
Stored energy
Quick energy
Biuret’s
Long term energy
Hormones
Glycerol
Phosphate
Sugar
Nitrogen base
Nucleotides
Written Response #7: Biomolecule Concept Map
• Draw the concept map in your notebook and complete.
Eggbert and Roberta’s Stomach -Lab
Testing Agent Positive Test
Benedict’s Solution (Simple Sugars) Orange or brick red
Iodine Solution (Starch)Dark green, blue or black (depending on the concentration)
Biuret’s Reagent Solution (Proteins) Pink or purple
Brown Paper Bag (Lipids/Fats)Paper will become translucent (see through). For this test, you must allow the solution to dry
Macromolecule Menu – complete on a separate sheet to turn in
• You have been hired as a nutritionist to plan a daily menu that will ensure your client is consuming the required organic molecules to support an active lifestyle and proper cell functioning.
1. Select a recipe for breakfast, lunch, dinner and snack
2. Analyze the recipe to make sure your client will consume all four biomolecules
Breakfast Lunch Dinner Snack
Ingredient Molecule Ingredient Molecule Ingredient Molecule Ingredient Molecule
1. 1. 1. 1.
2. 2. 2. 2.
3. 3. 3. 3.
4. 4. 4. 4.
Chemical Reactions
• Written Response #8:
1. Draw a synthesis reaction using glucose and starch. Label the reactant(s), product(s), glucose and starch.
2. Draw a digestion reaction using glucose and starch. Label the reactant(s), product(s), glucose and starch.
Protein Denaturation
• If you alter the temperature or pH, you will change the shape of a protein.
– If you change the shape, it will no longer work properly.
– The protein is now denatured.
Written Response #9: Enzyme Activity
1. At what pH would enzyme rate reach it peak?
2. What can you predict will happen to the enzyme activity if I add a strong acid?
3. What can you predict will happen to the enzyme activity if I add a weak acid?
Written Response #10: Lactose Intolerance
• Lactose intolerance is the inability to break down lactose (sugar in dairy) due to the lack of presence of lactase (enzyme that breaks down lactose).
• Write a paragraph and include pictures to describe what is happening internally for a person with lactose intolerance compared to someone who is not intolerant to lactose. *Remember the enzyme-substrate complex*
Enzyme Worksheet
• Complete the handout and glue/tape into your notebook.
• If you finish before class is over, work on your vocabulary activity (due Wednesday).
Enzyme Cut-Out Activity
1. At the top of the next page in your notebook, write “Enzyme Cut Out Activity”
2. Complete parts A, B and C in your notebook.
3. Complete part D on the handout first and then glue/tape it into your notebook.
Written Response #11
1. Label each of the parts a-d on the diagram to the right.
2. Answer true of false to the following statements:
A. Enzymes interact with specific substrates
B. Enzymes change shape after a reaction occurs
C. Enzymes speed up reactions.D. One enzyme can be used for many
different types of chemical reactions.
3. Write the correct effect (increase, decrease, not change).
A. Raising the temperature slightly will _____ the rate of reaction
B. Boiling temperature will _____ the rate of reaction.
C. Changing the pH toward the optimal pH will _____ the rate of reaction.
Proteins, Carbohydrates, Lipids,
Nucleic Acids
What are the 4 types of organic
compounds?
An atom
What is the simplest unit of matter?
Below 7
Where can acids be measured on the
pH scale?
Water
What is the most abundant compound
on Earth?
Long-term energy storage
What is the primary function of a lipid?
Provides a quick energy source
What is the primary function of a
carbohydrate?
Allows for growth and repair of tissues;
gene expression
What is the primary function of a
protein?
It stores or transmits genetic
information
What is the primary function of a
nucleic acid?
Sugars and starches
What are the two major classifications
of carbohydrates?
DNA and RNA
What are the two types of nucleic
acids?
Amino acids
Proteins are polymers of
20
How many amino acids exist?
Proteins
To which class of organic compounds
do enzymes belong?
Speed up chemical reactions and
break down materials
Enzymes have two vital functions.
What are they?
A molecule
What is the smallest unit of a
compound?
5-carbon sugar, nitrogen base,
phosphate group
What 3 structures make up a
nucleotide?
Nucleic acids
What do nucleotides join together to
form?
Puzzle pieces
(enzymes only bind to one specific
substrate)
What is a common analogy to
describe enzyme and substrate
interactions?
The active site
What part of an enzyme determines
the substrate on which it will act?
