AP Biology Unit 3 Quiz

What is the main goal of bioenergetics?

• To describe how living organisms acquire, transfer, and transform energy

• To study the processes involved in the transferring and transforming of energy in living organisms

• To understand the structure of living organisms

• To analyze the diversity among living organisms

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What is the difference between kinetic energy and potential energy?

• Kinetic energy is the energy of movement, while potential energy is energy in its stored form

• Kinetic energy is the energy stored in the bonds of chemicals, while potential energy is the energy of movement

• Kinetic energy is the energy in its stored form, while potential energy is the energy of movement

• There is no difference between kinetic and potential energy

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What is the first law of thermodynamics also known as?

• The Law of the Conservation of Energy

• The Law of Heat Energy

• The Law of Entropy

• The Law of Energy Transfer

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What is the process by which ATP is regenerated during cellular respiration?

• Phosphorylation

• Allosteric activation

• Substrate-level phosphorylation

• Oxidative phosphorylation

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What is the function of an enzyme in a biological reaction?

• To catalyze the reaction by lowering the activation energy required

• To provide energy for the reaction

• To inhibit the reaction

• To act as a reducing agent

What is the main purpose of feedback inhibition in a metabolic pathway?

• To permanently deactivate an enzyme or metabolic pathway when the end product concentration is low

• To temporarily deactivate an enzyme or metabolic pathway when the end product concentration is high

• To regulate the concentration of substrates in a metabolic pathway

• To increase the rate of a metabolic pathway

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What is the final product of glycolysis from the breakdown of one glucose molecule?

• 2 molecules of pyruvate

• 4 molecules of pyruvate

• 4 molecules of glucose

• 2 molecules of glucose

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What is the process by which ATP is formed directly from the transfer of phosphate groups and energy to ADP?

• Substrate-level phosphorylation

• Allosteric activation

• Oxidative phosphorylation

• Phosphorylation

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What is the main function of the electron transport chain in aerobic cellular respiration?

• To form water by combining oxygen gas and hydrogen ions

• To produce NADH and FADH2

• To break down glucose into pyruvate

• To create large amounts of ATP using the energy from electron carriers

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What is the main difference between aerobic and anaerobic cellular respiration?

• Aerobic respiration occurs in the cytoplasm, while anaerobic respiration occurs in the mitochondria

• Aerobic respiration requires oxygen, while anaerobic respiration does not

• Aerobic respiration produces more ATP than anaerobic respiration

• Aerobic respiration involves the Krebs Cycle, while anaerobic respiration does not

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