LABORATORY REVIEW
CELL RESPIRATION
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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beta oxidation
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aerobic respiration
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lactic acid fermentation
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alcoholic fermentation
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Detailed explanation-1: -Muscle cells can continue to produce ATP when oxygen runs low using lactic acid fermentation.
Detailed explanation-2: -Human muscle cells also use fermentation. This occurs when muscle cells cannot get oxygen fast enough to meet their energy needs through aerobic respiration. There are two types of fermentation: lactic acid fermentation and alcoholic fermentation.
Detailed explanation-3: -In the absence of oxygen (anaerobic glycolysis), a molecule of glucose is broken down into lactic acid, with the generation of two ATP molecules during the process (Fig. 5.20).
Detailed explanation-4: -However, in cells lacking mitochondria and/or adequate oxygen supply, glycolysis is the sole process by which such cells can produce ATP from glucose.
Detailed explanation-5: -Without oxygen, some human cells must use fermentation to produce ATP, and this process produces only two molecules of ATP per molecule of glucose.