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The globular head of kinesin binds to the MT and hydrolyzes GTP to cause movement.

a. True
b. False

1 Answer

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Final answer:

The statement is false because kinesin is an ATPase that uses ATP, not GTP, for the hydrolysis required for its movement along microtubules.

Step-by-step explanation:

The statement that the globular head of kinesin binds to the microtubules (MT) and hydrolyzes GTP to cause movement is false. Instead, kinesin is an ATPase, which means it uses the free energy from ATP hydrolysis—not GTP—to power motility.

During the process of cellular transport, kinesin binds to microtubules and hydrolyzes ATP , not GTP. This ATP hydrolysis triggers conformational changes in the kinesin that enable it to 'walk' along the microtubules, carrying various organelles, such as vesicles, within the cell. This is critical for processes such as exocytosis and neurotransmitter transport.

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