CanFitPro Personal Training Specialist Practice Test

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What role does creatine kinase play in muscle contraction?

  1. It signals muscles to contract

  2. It converts ATP into glucose

  3. It helps reform ATP from high-energy phosphates

  4. It breaks down glycogen into glucose

The correct answer is: It helps reform ATP from high-energy phosphates

Creatine kinase helps in the process of resynthesizing ATP from high-energy phosphates, which are used as a source of energy during muscle contraction. It is not responsible for signaling muscles to contract (A), converting ATP into glucose (B), or breaking down glycogen into glucose (D). Understanding the role of creatine kinase is important in understanding the process of muscle contraction and how the body utilizes energy during physical activity.

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