How Is the Structure of Kinesin Related to Its Function

question 52

Multiple Choice

How is the structure of kinesin related to its function?

• A) Kinesin has two intertwined polypeptides that make up the stalk and enable it to contract and shorten.
• B) Kinesin has a tail region that binds to vesicles and two heads that can attach to microtubules.
• C) The kinesin tail has an ATP binding site to fuel its activities.
• D) Kinesin has two heads to attach to the vesicle being moved and a tail region that attaches to microtubules.

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Definitions:

Semicircular Canal

Part of the inner ear involved in maintaining balance and sensing head rotation.

Cochlea

A spiral-shaped, fluid-filled inner ear structure that is responsible for converting sound waves into nerve impulses to be sent to the brain.

Cochlear Implant

A medical device that bypasses damaged structures in the inner ear and directly stimulates auditory nerve fibers to provide a sense of sound to individuals who are profoundly deaf or severely hard-of-hearing.

Hair Cells

Sensory cells located in the inner ear that are responsible for translating sound vibrations into electrical signals for hearing.