When Myosin Moves Along the Actin,it Goes Through Cycles of Binding

question 40

Multiple Choice

When myosin moves along the actin,it goes through cycles of binding and releasing (duty cycle) .How does myosin keep from losing its place on the actin when it releases?

• A)The time of the duty cycle is large (.99)so that it is only unattached a short time.
• B)The myosin is still attracted to the actin by weak electrostatic forces that prevent it from moving too far away during release.
• C)The myosin is attached to the actin by another protein that it uses as a safety line to prevent it from slipping too far back.
• D)The myosin is arranged in dimers so that when one releases,the other is bound.

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Definitions:

Infinite Slope

This represents a vertical line in a graph, indicating a situation where a small change in one variable causes an infinitely large change in another variable.

Dome-Shaped

A physical description of a structure or object that has a rounded, upward-curving shape reminiscent of a dome.

Inversely Related

A relationship between two variables where one increases as the other decreases, or vice versa.

Upward-Sloping

Characteristic of a line or curve that rises as it moves from left to right, used to describe certain types of supply curves.