The movement of substances from higher to lower concentration across a semipermeable membrane via a speciﬁc protein carrier but without energy expenditure is called ______.

Question

Quizplus · Accepted Answer

Facilitated diffusion is the process where substances move from an area of higher concentration to an area of lower concentration through a specific protein carrier in the membrane, without the need for energy. This is distinct from simple diffusion in that it requires a specific carrier molecule.

The Movement of Substances from Higher to Lower Concentration Across