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According to the sliding filament theory, which molecules are present when a muscle is in a relaxed state?

A. ADP (adenosine diphosphate)
B. Carbon dioxide
C. ATP (adenosine triphosphate)
D. Lipid

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Final answer:

ATP molecules are present when a muscle is in a relaxed state according to the sliding filament theory.


Explanation:

According to the sliding filament theory, ATP (adenosine triphosphate) molecules are present when a muscle is in a relaxed state. ATP is essential for muscle contraction and relaxation as it provides the energy needed for the cross-bridge cycling process where myosin filaments walk along actin filaments, leading to muscle contraction.


Learn more about Sliding Filament Theory here:

https://brainly.com/question/29870614


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