Which step of cross-bridge cycling is considered the power stroke?

a. when the myosin cross-bridge forms

b. when ATP binds to the myosin head and releases it from the thin filament

c. when the phosphate is released and the myosin cross-bridge moves to the right in the animation

d. when ATP is hydrolyzed and the myosin head moves to the left in the animation

Question

Biology

Myla Mcgee

1 January, 10:45

Which step of cross-bridge cycling is considered the power stroke?

a. when the myosin cross-bridge forms

b. when ATP binds to the myosin head and releases it from the thin filament

c. when the phosphate is released and the myosin cross-bridge moves to the right in the animation

d. when ATP is hydrolyzed and the myosin head moves to the left in the animation

+2

Answers (1)

Know the Answer?

Kenya Gray · Answer 1

c. when the phosphate is released and the myosin cross-bridge moves to the right in the animation.

Explanation:

Power stroke refers to the step whereby ADP and phosphate are released from the myosin, allowing the mysoin head to bend.