Multiple Choice
Which of the following substances are primarily lost from the body when a person perspires?
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7. Energy and Metabolism
Introduction to Metabolism
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Which of the following is true of endurance exercise?
A
It decreases the efficiency of oxidative phosphorylation.
B
It increases the number of mitochondria in muscle cells.
C
It primarily relies on anaerobic glycolysis for energy.
D
It leads to a significant buildup of lactic acid in the long term.
Verified step by step guidance1
Understand the context of endurance exercise: Endurance exercise involves prolonged physical activity that relies on aerobic metabolism to generate energy efficiently over time.
Review the role of mitochondria in muscle cells: Mitochondria are the organelles responsible for oxidative phosphorylation, a process that produces ATP using oxygen. Endurance exercise typically increases the number of mitochondria to enhance energy production.
Analyze oxidative phosphorylation efficiency: Endurance exercise improves the efficiency of oxidative phosphorylation by increasing mitochondrial density and function, allowing muscles to produce ATP more effectively during prolonged activity.
Evaluate energy sources during endurance exercise: Endurance exercise primarily relies on aerobic metabolism rather than anaerobic glycolysis, as oxygen is readily available to support sustained energy production.
Consider lactic acid buildup: Lactic acid accumulation is more common in short-term, high-intensity anaerobic activities. In endurance exercise, aerobic metabolism minimizes lactic acid buildup over the long term.
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