Facilitated diffusion and active transport differ in that
A) facilitated diffusion uses cell membrane proteins to move substances, whereas active transport does not.
B) facilitated diffusion uses a substrate to bind to a protein carrier, whereas active transport does not.
C) ATP is necessary for active transport, but not for facilitated diffusion.
D) facilitated diffusion moves water across the cell membrane, whereas active transport does not.
E) potential energy is required for active transport but not for facilitated diffusion.

Question

Quizplus · Accepted Answer

Facilitated diffusion utilizes proteins to move substances across the cell membrane, but it does not require ATP for energy. Active transport, on the other hand, utilizes energy in the form of ATP to move substances against the concentration gradient. Therefore, option C is the correct answer. Options A, B, D, and E are incorrect because they do not distinguish between the two processes accurately.

Facilitated Diffusion and Active Transport Differ in That