Question

the sodium - potassium pump uses energy from atp to move sodium ions out of the cell, and potassium ions into the cell. this is an example of
view available hint(s)
exocytosis.
facilitated diffusion.
diffusion.
passive transport.
active transport.

Explanation:

Active transport uses energy (ATP) to move substances against their concentration gradient. The sodium - potassium pump moves sodium ions out and potassium ions into the cell using ATP energy, which is characteristic of active transport. Exocytosis is for large - molecule secretion, facilitated diffusion and diffusion are passive processes that don't require ATP, and passive transport doesn't use energy to move substances down their concentration gradient.

Answer:

active transport.