Which of the Following Best Describes a Muscle Contraction

question 23

Multiple Choice

Which of the following best describes a muscle contraction?

• A) At the signal to contract, ATP provides energy to allow sacromeres to slide over myosin filaments, pulling z-disks together.
• B) At the signal to contract, myosin produces energy to allow actin filaments to slide over z-disks, pulling sacromeres together.
• C) At the signal to contract, ATP provides energy to allow myosin heads to pull the actin filaments thereby pulling z-disks closer together.
• D) At the signal to contract, ATP provides energy to allow myofibrils pull z-disks closer together.
• E) At the signal to contract, ATP provides energy to allow tendons to pull sacromeres closer together.

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