Card 20 / 34: What is step 3 of muscle contraction?
A)
Power stroke causes filaments to silde; ADP is released.
B)
Pi is released, causing conformational change in myosin.
C)
A new ATP binds to myosin head, allowing it to release from actin.
D)
ATP is hydrolyzed causing cross bridge to return to its original orientation.
E)
Cross bridge binds to actin.
Answer:
B) Pi is released, causing conformational change in myosin.
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Nick Swain |
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