Question

What are the steps of muscle cell contraction?

• A. Attachment, detachment, relaxation, re-cocking
• B. Power stroke, relaxation, re-cocking, attachment
• C. Attachment, power stroke, detachment, re-cocking
• D. Relaxation, attachment, detachment, power stroke

Hint:

These steps involve the interaction of actin and myosin filaments.

Answer 1

The Correct Option is A

Muscle contraction follows these steps:

• Attachment (myosin binds to actin)
• Power stroke (myosin pulls actin)
• Detachment (myosin releases actin)
• Re-cocking (myosin resets for the next cycle)