McGraw-Hill Online Learning Center Test

McGraw-Hill Online Learning Center Test


1. Review the image and answer the following questions.

What does binding of ADP + Pi do to the myosin head?

A. causes the myosin head to assume a more bent conformation, moving the actin filament along
B. moves the myosin head out of the way so contraction can occur
C. releases calcium from the sarcoplasmic reticulum
D. All of these are correct.


2. What hides the binding site on the actin myofilament during periods of rest when the sarcomere is not contracting?

A. dystrophin
B. troponin-tropomyosin complex
C. myoglobin
D. lactic acid
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