Which of the following is not a difference between passive facilitated transport and active transport?
A) Active transport moves substances against their concentration gradient, while facilitated transport moves substances down their concentrations gradient.
B) Active transport and facilitated transport both play a role in maintaining proper concentrations of substances in the intra- and extracellular environments.
C) Active transport requires a membrane protein to move molecules across the plasma membrane, while facilitated transport does not.
D) Active transport requires energy input in the form of ATP, while facilitated transport does not.

Question

Quizplus · Accepted Answer

Active transport and facilitated transport differ in the requirement of membrane proteins to move molecules across the plasma membrane. Facilitated transport requires membrane proteins, such as channel or carrier proteins, to move molecules down their concentration gradient, while active transport uses pumps, which are membrane proteins, to move molecules against their concentration gradient. Both processes play a role in maintaining proper concentrations of substances, but the mechanism of protein involvement is different. Both processes also do not require energy input from ATP, as some forms of facilitated transport, such as passive diffusion, do not require energy input.

Which of the Following Is Not a Difference Between Passive