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AP Biology: Exam Review: Practice Questions with 100% Correct Answers
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AP Biology: Exam Review: Practice Questions with 100% Correct Answers DNA/Biochemestry Test 1. The digestive enzyme pepsin works in the acidic environment of the stomach to hydrolyze peptide bonds. On which macromolecules does pepsin act? A. carbohydrate B. protein C. DNA D. lipid - Answer�...

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  • September 13, 2024
  • 83
  • 2024/2025
  • Exam (elaborations)
  • Questions & answers

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  • ap biology exam review practice questions with 1

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  • AP Biology
  • AP Biology

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©SOPHIABENNETT
EXAM_SOLUTIONS GUARANTEED SUCCESS 2024/2025 ACADEMIC YEAR




©SOPHIABENNETT 9/3/24 2024/2025

, ©SOPHIABENNETT EXAM SOLUTIONS_2024/2025 Tuesday, September 3, 2024 10:30 AM



AP Biology: Exam Review: Practice
Questions with 100% Correct Answers


DNA/Biochemestry Test

1. The digestive enzyme pepsin works in the acidic environment of the stomach to

hydrolyze peptide bonds. On which macromolecules does pepsin act?

A. carbohydrate

B. protein

C. DNA

D. lipid - Answer✔️✔️-B. Protein

2. Egg whites consist primarily of water and the protein albumin. When you fry an egg,

why does the egg white turn from clear to white?

A. The protein becomes dissociated.

B. The protein acquires tertiary structure.

C. The protein becomes denatured.

D. The protein becomes dehydrated - Answer✔️✔️-C. The Protein becomes denatured

3. Margarine is made by hydrogenating vegetable oils so that they take on the

consistency of butter. Which of the following is the chemical basis for this change from a

liquid to a solid?

A. Fats are changed from unsaturated to saturated, allowing them to solidify.

B. Fats are changed from saturated to unsaturated, allowing them to solidify.



Page | 1

, ©SOPHIABENNETT EXAM SOLUTIONS_2024/2025 Tuesday, September 3, 2024 10:30 AM


C. Trans-fatty acids are changed from unsaturated to saturated, allowing them to

solidify.

D. Trans fatty acids are changed from saturated to unsaturated, allowing them to

solidify. - Answer✔️✔️-A. Fats are changed from unsaturated to saturated, allowing them

to solidify.

4. People who are lactose intolerant can often consume some products made from milk

such as cheese and yogurt. By comparison, people with a true milk allergy, which

involves an immune response to milk protein, cannot consume milk or products made

from milk. Given this information, which of the following statements is true?

A. The protein that causes a true milk allergy is lactose. B. All people who are lactose

intolerant are also allergic to milk.

C. Yogurt contains live and active cultures of Lactobacillus acidophilus bacteria and

therefore prevents an allergic response in people with a true milk allergy.

D. Lactose is a carbohydrate, not a protein and is therefore not the cause of true milk

allergies. - Answer✔️✔️-D. Lactose is a carbohydrate, not a protein and is therefore not

the cause of true milk allergies.

5. Shivering is the result of uncontrollable contractions of skeletal muscle tissue in an

effort to increase heat production and raise body temperature. How does this process

relate to ATP hydrolysis?

A. ATP is converted directly to heat.

B. Muscle contractions in the form of shivering produces heat and warms the body.

C. ATP hydrolysis causes muscle contraction.




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, ©SOPHIABENNETT EXAM SOLUTIONS_2024/2025 Tuesday, September 3, 2024 10:30 AM


D. Muscle contractions require ATP hydrolysis. Energy is liberated by ATP hydrolysis

and converted into heat. - Answer✔️✔️-D. Muscle contractions require ATP hydrolysis.

Energy is liberated by ATP hydrolysis and converted into heat.

6. Hemoglobin is a protein composed of four subunits, each with a binding site for

oxygen. When a molecule of O2 binds to any one of the subunits, the affinity of the

other three subunits for O2 is increased. What role is oxygen playing in this process?

A. enzyme

B. allosteric activator

C. allosteric inhibitor

D. substrate - Answer✔️✔️-B. allosteric activator

7. While conducting an experiment, you realize that a competitive inhibitor was

interfering with your reaction. To overcome this problem, you

A. add a non-competitive inhibitor to the reaction.

B. decrease the concentration of the correct substrate in the reaction.

C. increase the concentration of the correct substrate in the reaction.

D. add an allosteric activator to the reaction. - Answer✔️✔️-C. increase the concentration

of the correct substrate in the reaction.

8. After getting off the ski lift, you choose a trail that requires you to ski up a small

incline before beginning the downward section of the trail. In this scenario, the hill is

analogous to

A. free energy.

B. potential energy.

C. kinetic energy.


Page | 3

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