How 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

During a contraction cycle, myosin heads bind to actin and undergo a series of conformational changes to generate force and movement. However, not all myosin heads are synchronized in their movement; instead, they beat out of synchrony with one another to continuously contract and relax the thin filament. This allows for a smooth, sustained contraction without the filament stalling or stopping. ATP is also required for the movement of the myosin heads, but it is not the sole factor in the continuous movement of the thin filament.

How Does an Actin Thin Filament Manage to Move Continuously