Question

which statement accurately describes the absorption of nutrients via facilitated transport?
o a. it takes place in the large intestine.
o b. it requires a specific carrier.
o c this process is also known as endocytosis.
o d. this process requires a concentration gradient.

Explanation:

Facilitated transport requires specific carriers (transport proteins) to move substances across the membrane. It does not require energy (unlike active transport) and occurs down a concentration gradient (so option d is wrong as it's a characteristic of simple diffusion, not facilitated transport). Endocytosis is a different process (cellular uptake of large particles by engulfing, so option c is wrong). Facilitated transport can occur in various parts of the body where there are membranes with transport proteins (not just the large intestine, so option a is wrong).

Answer:

B. It requires a specific carrier.