Which of the following is/are required with actin and myosin in order to initiate muscle contraction?
A)ATP
B)calcium
C)phosphate
D)calcium and ATP
E)calcium and phosphate

Question

Quizplus · Accepted Answer

Calcium ions bind to troponin, which causes the tropomyosin to move, exposing myosin binding sites on the actin filament, allowing the actin and myosin to interact and cause muscle contraction. This interaction requires energy in the form of ATP. Therefore, both calcium and ATP are required for muscle contraction.

Which of the Following Is/are Required with Actin and Myosin