Multiple Choice
A muscle fiber contracts by a sequence of events initiated by the binding of acetylcholine to its receptor.Which of the following is the correct sequence? I-The calcium-troponin complex pulls tropomyosin away from the myosin binding sites of actin.
II-The freed-sites of actin bind to myosin to form cross bridges.
III-Calcium ion binds to the troponin.
A) I,III,and II
B) III,II,and I
C) II,III,and I
D) I,II,and III
E) III,I,and II
Correct Answer:
Verified
Correct Answer:
Verified
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