The force driving simple diffusion is ________, while the energy source for active transport is ________.
A) a concentration gradient; ADP
B) a concentration gradient; ATP hydrolysis
C) transmembrane pumps; an electrochemical gradient
D) phosphorylated carrier proteins; ATP

Question

Quizplus · Accepted Answer

The force driving simple diffusion is a concentration gradient, which allows molecules to move from an area of high concentration to an area of low concentration without the need for energy. Active transport, on the other hand, requires energy to move substances against their concentration gradient, and this energy is typically provided by ATP hydrolysis.

The Force Driving Simple Diffusion Is ________, While the Energy