MUSCLE
SKELETAL MUSCLE
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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Which of the following occurs When ATP binds to the myosin head?
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Myosin head detaches from actin
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Myosin head forms cross-bridge
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Myosin undergoes power stroke
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Myosin releases calcium
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Explanation:
Detailed explanation-1: -ATP binding causes myosin to release actin, allowing actin and myosin to detach from each other. After this happens, the newly bound ATP is converted to ADP and inorganic phosphate, Pi. The enzyme at the binding site on myosin is called ATPase.
Detailed explanation-2: -ATP binding causes the myosin head to detach from the actin (Figure 4d). After this occurs, ATP is converted to ADP and Pi by the intrinsic ATPase activity of myosin.
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