Cellular Respiration - SAT Subject Test in Biology

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Question

All of following are true of cellular respiration EXCEPT __________.

Answer

Cellular respiration is NOTan anaerobic process. It is exactly the opposite! Cellular respiration uses oxygen as its final electron acceptor making it an aerobic process. Anaerobic process do not use oxygen.

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Question

For each molecule of glucose, how many ATP are produced by the Citric Acid Cycle?

Answer

Each molecule of glucose produces 2 pyruvate molecules. Each of these pyruvate molecules go through the citric acid cycle and produce 1 ATP each, resulting in 2 ATP total.

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Question

How many ATP molecules are produced per glucose molecule in anaerobic respiration?

Answer

Anaerobic respiration takes place when oxygen is low, such as when lactic acid fermentation takes place in human muscle tissue. This can be painful and cause some of the cramps experienced during intense exercise. Anaerobic respiration is much less efficient at producing ATP than aerobic respiration; it only produces 2 ATP per glucose molecule vs. 36 net ATP in aerobic respiration.

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