When muscle is at rest, the myosin head is bound to ________.
A) ATP
B) tropomyosin
C) ADP plus an associated phosphate
D) troponin
E) actin

Name: When muscle is at rest, the myosin head is bound to ________. A) ATP B) tropomyosin C) ADP plus an associated phosphate D) troponin E) actin
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Quizplus · Accepted Answer

When a muscle is at rest, the myosin head is bound to tropomyosin, a regulatory protein that blocks the binding site on actin to prevent muscle contraction.

When Muscle Is at Rest, the Myosin Head Is Bound