AP Bio - Unit 3 Review

What occurs during anabolic reactions?

• energy is made available

• simpler combine to produce more complex

• 34ish ATP are produced

• complex breakdown to simple

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What effect does adding an enzyme to a reaction cause?

• increasing the time it takes for the reaction to occur

• increases the activation energy

• decreases the activation energy

• increasing the amount of energy necessary for the reaction

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Enzyme X has an optimum rate of reaction at 97 degrees Fahrenheit. How would rate of reaction be affected if temperature fell to 92 degrees Fahrenheit?

• increase - not as hot

• decrease - no substrate would be produced

• increase - more substrate would be produced

• decrease - cause a change in the shape of the protein

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Which of the following is true of enzymes?

• they increase the rate of a reaction

• they are typically proteins

• functionality is dependent upon shape

• functionality is dependent upon temp and pH

• all of the above are true of enzymes

Which enzyme functions best in acidic environments?

• neither enzyme

• Enzyme A

• Enzyme B

• Both enzymes

What is true of glycolysis?

• produces a net of 2 ATP

• occurs in the mitochondria

• produces ATP through oxidative phosphorylation

• produces 34ish ATP

• all of the above are true

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Which of the following occurs during fermentation?

• oxygen is used to make ATP

• oxidation of NADH

• reduction of NADH

• oxygen is used to make ATP and oxidation of NADH

• All answers are true

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What does glycolysis and fermentation have in common?

• both occur in the cytoplasm

• both occur only in the presence of oxygen

• both are aerobic processes

• both utilize the electron transport chain

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The proton-motive force created as electrons move across the ETC is used to

• drive anaerobic respiration

• drive chemiosmosis

• absorb light energy

• convert ATP into glucose

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What serves as the final acceptor of the electrons moving down the ETC during cellular respiration?

• sulfur

• carbon dioxide

• ATP

• oxygen

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