Which of the following limits the movement of molecules by means of carrier-mediated facilitated diffusion?
A) The concentration gradient
B) The availability of carrier molecules
C) Temperature
D) Both a and b
E) All of the above

Question

Quizplus · Accepted Answer

Carrier-mediated facilitated diffusion is a type of passive transport where molecules move across the membrane with the help of carrier proteins, but unlike simple diffusion, the movement is not solely dependent on the concentration gradient. The availability of carrier proteins also plays a crucial role in regulating the movement of molecules. Therefore, both the concentration gradient and carrier availability limit the movement of molecules in carrier-mediated facilitated diffusion. Temperature may also affect the rate of movement, but it does not necessarily limit it like the other two factors. Hence, the correct answer is D.

Which of the Following Limits the Movement of Molecules by Means