ENERGY RELEASE AND CONSERVATION QUIZ

In lactic acid fermentation, the final electron acceptor would be

pyruvate

glucose

fructose

acetyl-CoA

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YOUR ANSWER : ?

Which of the following best explains about the usefulness of the production of ethanol in yeast cells under anaerobic conditions?

Yeast would be unable to activate the enzymes of the Krebs cycle without ethanol

The process generates oxygen, which is required for glycolysis

The process regenerates NAD+, which is required for glycolysis

Ethanol keeps the electron transport system functioning

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YOUR ANSWER : ?

Aerobic respiration differs from anaerobic respiration in which of the following respects?

The final electron acceptors are different

Aerobic respiration requires the electron transport chain

Aerobic respiration produces less ATP

Anaerobic respiration is glycolysis

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YOUR ANSWER : ?

Most bacterial fermentations yield how many net ATP molecules per molecule of glucose?

2

1

4

6

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YOUR ANSWER : ?

The enzymes that catalyze the reactions of the Krebs cycle are found in which subcellular organelle of eukaryotes?

Chloroplast

Ribosome

Endoplasmic reticulum

Mitochondrion

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YOUR ANSWER : ?

Suppose a eukaryotic cell had a mutation that prevented the production of cytochrome c. As a result of this mutation, which of the following processes would not occur?

Cellular respiration

Photosynthesis

Mitosis

Cell wall synthesis

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YOUR ANSWER : ?

Organisms can synthesize ATP by oxidative phosphorylation when they

pass electrons from the oxidation of chlorophyll through an electron transport system

oxidize glucose to pyruvate

ferment

pass electrons to oxygen through an electron transport system containing cytochromes

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YOUR ANSWER : ?

The amount of ATP that can be obtained by complete oxidation of a glucose by a bacterium is

greater than by a yeast cell

none of these

lesser than by a yeast cell

exactly or approximately equal to by a yeast cell

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YOUR ANSWER : ?

The amount of energy (cal/mole) in an ATP molecule produced by a cell from glucose by fermentation is

greater than aerobic metabolism

None of these

exactly or approximately equal to aerobic metabolism

less than aerobic metabolism

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YOUR ANSWER : ?

Which one of the following is produced in the greatest numbers during one turn of the Krebs cycle?

ATP

NADH

FADH2

Acetyl-CoA

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YOUR ANSWER : ?