Kinesin 1 Is Highly Processive Motor,taking More Than 100 Steps

question 43

Multiple Choice

Kinesin 1 is highly processive motor,taking more than 100 steps (covering 1 μm along a microtubule) before dissociating,primarily because

• A)it hydrolyzes ATP more rapidly than other motors.
• B)one of its two heads is always attached in it hand-over-hand mechanism.
• C)light chains at its nonmotor end attach to cargo vesicles.
• D)its efficiency of converting ATP hydrolysis energy to useful work is 60-70%.
• E)All are required for processivity.

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Definitions:

Temperament

Refers to the inherent traits that determine how an individual reacts to and interacts with their environment.

Emotional Reactivity

The extent to which a person is sensitive to emotional material and responds intensely to emotional situations.

Social Connectedness

The sense of belonging and subjective psychological bond people feel with others and the community at large.

Reactive Nervous System

Refers to the part of the nervous system responsible for reacting to stress and threats, activating fight or flight responses.