Question

QUICK!!

How do carrier proteins facilitate active transport?
A) Carrier proteins block the plasma membrane.
B) Carrier proteins create an isotonic solution.
OC) Carrier proteins move substances from a high to low concentration.
D) Carrier proteins move substances from a low to high concentration.

Answer 1

Answer: D

Explanation: Active transport refers to the transfer of a substance against its concentration gradient, hence why ATP is required.