Question

What is a difference between facilitated diffusion and active transport?

A. Facilitated diffusion uses ATP and requires a carrier protein.
B. Active transport uses ATP and does not requires a carrier protein.
C. Active transport uses ATP and moves substances against the concentration gradient.
D. Facilitated diffusion uses ATP and moves substances with the concentration gradient.

Answer 1

Facilitated diffusion does not require energy and moves substances with the concentration gradient using carrier proteins. Active transport uses energy in the form of ATP and moves substances against the concentration gradient.

Step-by-step explanation:

The difference between facilitated diffusion and active transport lies in the use of energy and the movement of substances against or with the concentration gradient.

Facilitated diffusion does not require ATP and moves substances with the concentration gradient, using carrier proteins in the cell membrane to aid in the transport process.

On the other hand, active transport uses ATP and moves substances against the concentration gradient, requiring membrane proteins to pump molecules or ions across the membrane to reach higher concentrations.