Question

Which of the following statements describes active transport?

Movement of a specific substance across a membrane.
Spontaneous movement of a substance through a semipermeable membrane.
Net movement of a substance from a region of higher concentration to a region of
lower concentration.
Movement of a substance against a concentration gradient.

Answer 1

Movement of a specific substance across a membrane.

Answer 2

Answer: Movement of a substance against a concentration gradient.

Explanation: Hope this was helpful