Question Detail

BIO 101 BIO 101 Past Questions Objective Question

Question

Which of the following functions does active transport perform in a cell?
Options
A Packaging proteins for export from the cell
B Distributing enzymes throughout the cytoplasm
C Moving substances against a concentration gradient
Correct Answer
D Equalizing the concentration of water inside & outside the cell
Correct Answer

Option C is the correct answer.

Detailed Explanation

Active transport is the movement of molecules or ions across a cell membrane from a region of lower concentration to a region of higher concentration. This process requires energy (ATP) because it is moving substances against their concentration gradient.

Hint

What defines active transport: moving with or against the concentration gradient?

Question Info