AP Biology: Exam Review: Practice Questions with 100% Correct Answers
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Course
AP Biology
Institution
AP Biology
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�...
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.
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