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michellemm74 michellemm74
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11 years ago
Which energy production process provides the majority of the energy for muscle activity?

A) aerobic respiration
B) direct phosphorylation of ADP by creatine phosphate
C) use of stored ATP
D) anaerobic glycolysis
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Nursing01Nursing01
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11 years ago
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11 years ago
ATP is the energy source muscle's use, but is stored in a very small amount, the storage would be used up within a second.
Direct Phosphorylation of ADP by creatine phosphate yields 1 mole of ATP per 1 mole of PCr .
Anaerobic Glycolysis yields 1 mole of glycogen produces 3 moles of ATP.
These 2 do not produce a lot of ATP and are used during the first few minutes of intense exercise
Aerobic Respiration is slow to turn on, but is more complex than the others and lasts much longer & has a tremendous energy-yielding capacity, so aerobic metabolism is the primary method of energy production during endurance events.

So overall Aerobic respiration can produce the most energy, but it takes longer to turn on, so it depends on the type of exercise. But I would assume your answer is A
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