Against the concentration gradient

Question

low to high uses energy/ATP

Group of answer choices

active transport

facilitated diffusion

diffusion

osmosis

Answer 1

The correct answer is active transport.

Active transport is the process that moves substances against their concentration gradient (from low to high concentration) and requires energy, typically in the form of ATP.

Facilitated diffusion, diffusion, and osmosis all occur along the concentration gradient (from high to low concentration) and do not require energy.