Multiple choice

Facilitated diffusion __________.

  1. requires the use of ATP

  2. moves against the concentration gradient

  3. works independently of the concentration gradient

  4. moves down the concentration gradient
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

Facilitated diffusion is a form of passive transport where molecules move down their concentration gradient using specific membrane proteins. It does not require ATP.

Keep practicing — related questions