Question

ATP provides energy for muscle contraction by allowing for:

• A. An action potential formation in he muscle cell
• B. Cross-bridge detachment of myosin from actin
• C. Cross-bridge attachment of myosin to actin
• D. Release of $C{a}^{+2}$ from sarcoplasmic reticulum

Answer 1

The correct option is B Cross-bridge detachment of myosin from actin

ATP helps in muscle contraction by helping in the actin-myosin cross bridges to form and detach. ATP binds to the myosin head and causes the cross bridge between actin and myosin to detach. ATP then provides the energy to pull the myosin back, by hydrolysing to ADP + Pi.

So, the correct option is 'Cross-bridge detachment of myosin from actin'.