The movement of substances from lower to higher concentration across a semipermeable membrane via a speciﬁc protein carrier and cell expenditure of energy is called ______.

Question

Quizplus · Accepted Answer

Active transport is the process where cells move substances from a lower to a higher concentration across a semipermeable membrane using specific protein carriers and energy, typically in the form of ATP.

The Movement of Substances from Lower to Higher Concentration Across