How do actin and myosin molecules interact?
A) Globular myosin heads bind to actin filaments.
B) Globular actin heads bind to myosin filaments.
C) Other proteins connect the two.
D) Myosin filaments bend to connect to actin.
E) Actin filaments bend to connect to myosin.

Question

Quizplus · Accepted Answer

Actin and myosin molecules interact through a process called the sliding filament theory. During muscle contraction, the globular heads of myosin molecules bind to specific sites on the actin filaments. This causes the myosin heads to change shape, pulling the actin filaments closer together and resulting in muscle contraction.

How Do Actin and Myosin Molecules Interact