chemistry

profiledeliaaaa
ProteinProblemSet.docx

Proteins and Lipids Problem Set

Chem B11

Name:___________________________________

Lab Section:______________________________

1. Draw the backbone of an amino acid in the form it would be at the pH of our bodies. Use R to represent the R group.

2. Draw the tripeptide phenylalanylcystylhistidine

3. Define the following terms:

a. Primary Structure

b. Secondary Structure

c. Tertiary Structure

d. Quaternary structure

4. Describe the action of an enzyme. Where on the protein molecule does the reaction take place? What makes the enzyme so it will only react with a particular substrate?

5. Describe each of the four ways an enzyme’s action can be inhibited.

6. What effects does pH change and temperature change have on enzyme activity?

7. What type of enzyme would you expect to catalyze the following reactions? The types of enzymes include: oxidoreducase, transferase, isomerase, lyase, hydrolase, and ligase.

https://www.cliffsnotes.com/assets/24736.gif

Type of enzyme ____________________

https://www.cliffsnotes.com/assets/24740.gif

Type of enzyme _____________________

Image result for fatty acid hydrolysis

Type of enzyme ______________________

8. Draw the fatty acid linoleic acid.

9. a. Draw a triglyceride with three oleic acids attached to the glycerol.

b. What is the major purpose of triglycerides in our bodies?

10. a. Draw a glycerophospholipid that includes 2 stearic acids and an ethanolamine.

b. What is the major purpose of glycerophospholipids in our bodies?

11. Cholesterol is the building block of several types of other important biomolecules. They are listed below. What are the major roles they play in our bodies?

a. Bile salts

b. Lipoproteins

c. Steroid Hormones

d. Adrenal Corticosteroids

3

Bakersfield College Wade Ellis