Choose the answer that best describes the movement of molecules by symporters and antiporters.

Question

Quizplus · Accepted Answer

Symporters and antiporters are both types of transport proteins involved in moving molecules across cell membranes. In symporters, two molecules are transported in the same direction across the membrane; one molecule moves down its concentration gradient, providing the energy for the other molecule to move against its gradient. In antiporters, two molecules are transported in opposite directions; similarly, one molecule moves down its concentration gradient, which drives the movement of the other molecule against its gradient.

Choose the Answer That Best Describes the Movement of Molecules