The given figure represents the cross bridge cycle in skeletal muscles. What does the step B in the figure represent?

Attachment of myosin head to actin forming cross bridge.

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Release of phosphate. Myosin changes shape to pull actin.

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Attachment of new ATP to myosin head. The cross bridge detaches.

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Splitting of ATP into ADP and Pi. Myosin cocks into its high energy conformation.

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Solution

The correct option is B Release of phosphate. Myosin changes shape to pull actin.
Step A: Attachment of myosin head to actin forming cross bridge.
Step B: Release of phosphate. Myosin changes shape to pull actin.
Step C: Attachment of new ATP to myosin head. The cross bridge detaches.
Step D: Splitting of ATP into ADP and Pi. Myosin changes into its high energy conformation

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Similar questions

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

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

C a^{+ +}

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