Cross bridges
A) bind to actin during muscle contraction
B) are globular heads made of myosin
C) do not bend during muscle contraction
D) have characteristics a and b
E) have characteristics b and c
Correct Answer:
Verified
Q14: A function of tropomyosin is
A)to bind Ca₂₊
B)to
Q15: Each I band in a skeletal muscle
Q16: The striated appearance of skeletal muscle is
Q17: Muscle fibers develop tension by
A)contraction of sarcomeres
B)shortening
C)the
Q18: Actin
A)does not perform a power stroke during
Q20: During contraction of a sarcomere,
A)the Z discs
Q21: During contraction of skeletal muscle fibers, the
A)contractile
Q22: During a cross-bridge cycle in skeletal muscle,
A)the
Q23: Binding of _ to myosin permits the
Q24: During contraction, asynchronous cycling of cross bridges
A)prevents
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