Question

What is the correct sequence of events in the cross bridge formation?

i. The power stroke

ii. Cross bridge formation

iii. Myosin head is activated by ATP

iv. Calcium released binds to the troponin unblocks the actin sites

v. Cross bridge detachment

vi. Reactivation of the myosin head

• A. iv, iii, ii, i, v, vi.
• B. i, v, ii, iii, iv, vi.
• C. iii, iv, i, v, ii, vi.
• D. ii, i, iv, iii, v, vi.

Answer 1

The correct option is A

iv, iii, ii, i, v, vi.

The Correct sequence of events in the cross bridge formation are

1. Calcium released binds to the troponin unblocks the actin sites.

2. Myosin head is activated by ATP.

3. Cross bridge formation.

4. The Power Stroke.

5. Cross Bridge detachment.

6. Reactivation of the myosin head.