Multiple Choice
During aerobic respiration, molecular oxygen (O2) is used for which of the following purposes?
8. Respiration
Review of Aerobic Cellular Respiration
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If muscle cells in the human body consume O2 faster than it can be supplied, which of the following is likely to result?
A
The muscle cells will have more trouble making enough ATP to meet their energy requirements.
B
The cells will not be able to carry out oxidative phosphorylation.
C
The cells will consume glucose at an increased rate.
D
Only the first two answers are correct.
E
The first three answers are correct.
Verified step by step guidance1
Understand that muscle cells require oxygen (O2) for aerobic respiration, which is the process that produces ATP efficiently through oxidative phosphorylation.
Recognize that if O2 is consumed faster than it can be supplied, the cells will not have enough oxygen to carry out oxidative phosphorylation, leading to a decrease in ATP production.
Since oxidative phosphorylation is impaired, the muscle cells will rely more on anaerobic respiration, which is less efficient and produces less ATP, causing the cells to have trouble meeting their energy requirements.
Anaerobic respiration leads to an increased rate of glucose consumption because it produces ATP less efficiently, requiring more glucose to meet the same energy demands.
Conclude that all three statements are correct: the cells will struggle to produce enough ATP, oxidative phosphorylation will be hindered, and glucose consumption will increase.
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