Question

what is the first source of energy that is used to convert adp to atp after a contraction in a skeletal muscle cell begins?
○ creatine phosphate
○ glycolysis
○ aerobic respiration

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Explanation:

When a skeletal - muscle contraction begins, creatine phosphate donates a phosphate group to ADP to quickly form ATP. Glycolysis and aerobic respiration are slower processes for ATP production compared to the immediate action of creatine phosphate.

Answer:

Creatine phosphate