What is tropomyosin?

A. A protein found along the groove of the F-actin double helix
B. After exercise, the O2 taken in that exceeds the O2 required for resting metabolism
C. The combination of myosin heads with active sites on actin molecules
D. The movement of myosin head while attached to actin myofilament
E. A T tubule and two adjacent terminal cisternae


Answer: A

Anatomy & Physiology

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