The movement of solute molecules across a plasma membrane from an area of low solute concentration to an area of high solute concentration requires
A)cellular energy
B)facilitated diffusion
C)integral proteins
D)cellular energy and facilitated diffusion
E)cellular energy and integral proteins

Question

Quizplus · Accepted Answer

The movement of solute molecules from an area of low solute concentration to an area of high solute concentration is against the concentration gradient and requires energy, typically in the form of ATP. This process is known as active transport. Integral proteins, often functioning as pumps, are necessary to facilitate this movement across the plasma membrane.

The Movement of Solute Molecules Across a Plasma Membrane from an Area