Sodium-potassium pumps, endocytosis, and exocytosis all involve active transport. Which of the following is a characteristic of active transport? (SC.912.L.14.3)

Question

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1 point
It involves facilitated diffusion.
It requires energy from the cell.
It relies on vesicles that often function as pumps.
It moves substances with a concentration gradient.

Answer 1

The characteristic of active transport is:

It requires energy from the cell.

Active transport mechanisms, such as sodium-potassium pumps, require ATP or other energy sources to move substances against their concentration gradient.