Which of these is an example of carrier-mediated transport that does not require energy input?
A) an ion exchange pump
B) facilitated diffusion
C) endocytosis
D) exocytosis
E) pinocytosis

Question

Quizplus · Accepted Answer

Facilitated diffusion is a type of carrier-mediated transport that does not require energy input. It involves the movement of molecules or ions across a membrane with the help of a membrane protein, such as a channel or a carrier. Unlike active transport, which requires energy input, facilitated diffusion occurs down the concentration gradient and does not expend energy. Options A, C, D, and E require energy input and are examples of active transport.

Which of These Is an Example of Carrier-Mediated Transport That