AP Bio - Unit 3 Review

What occurs during anabolic pathways?

• energy is made available

• simpler combine to produce more complex

• 34ish ATP are produced

• complex breakdown to simple

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What is true of a catabolic pathway?

• energy is consumed to build complex substances

• energy is released to during the building of complex substances

• energy is consumed to break down complex substances

• energy is released during the breakdown of complex substances

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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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What does activation energy refer to?

• The amount of energy at the beginning of a reaction.

• A thermodynamic barrier that must be overcome for a reaction to occur.

• The amount of energy released during the complete breakdown of a reactant.

• The amount of energy at the end of a reaction.

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 the 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?

• 2 ATP are used to produce 4 ATP

• occurs in the mitochondria

• produces ATP through oxidative phosphorylation

• produces a net of 4 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 is true of glycolysis?

• Glycolysis is a key component of cellular respiration and fermentation.

• Glycolysis occurs on the inner membrane of the mitochondria.

• Glycolysis only occurs in the presence of oxygen.

• Glycolysis only occurs in animal cells.

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