Which of the following statements about nutrient transport is TRUE?

Question

Quizplus · Accepted Answer

Active transport requires the use of energy (often in the form of ATP) to move molecules against their concentration gradient. This process is used for certain nutrients that enter the enterocyte at low concentrations and are needed at higher concentrations in the body. Passive diffusion (option A) is the movement of molecules from an area of high concentration to an area of low concentration and doesn't require energy. Endocytosis (option C) is a process by which the cell membrane infolds around molecules or particles and engulfs them into the cell, also not a type of passive diffusion. Facilitated diffusion (option D) refers to the process by which molecules, such as glucose, are helped across the cell membrane by a transport protein, but again it doesn't require ATP.

Which of the Following Statements About Nutrient Transport Is TRUE