Why does an actin thin filament manage to move continuously during a contraction cycle?
A)All of the myosin heads beat synchronously.
B)All of the myosin heads beat out of synchrony with one another.
C)They use an enormous amount of ATP.
D)They use an enormous amount of GTP.
E)none of these choices

Question

Quizplus · Accepted Answer

The myosin heads attached to the actin thin filament beat out of synchrony with one another, which allows for continuous movement during a contraction cycle. This is known as cross-bridge cycling. ATP is used for energy during this process, but the heads do not beat synchronously or use an enormous amount of GTP.

Why Does an Actin Thin Filament Manage to Move Continuously