Question

The mechanism depicted in (b) would most likely mediate the diffusion of which of the following solutes?

a) Protein

b) Amino acid

c) Fatty acid

d) Oxygen molecule

Answer 1

The mechanism depicted most likely mediates the facilitated diffusion of an amino acid as it uses selective carrier proteins.

Step-by-step explanation:

The mechanism depicted in (b) which is most likely to mediate the diffusion of a solute would be facilitated diffusion via carrier proteins. From the choices given, the solute most likely to be transported by this mechanism is b) Amino acid. Carrier proteins are selective and usually allow the passage of specific types of molecules such as amino acids. Other substances like proteins are generally too large, fatty acids are usually part of other transport mechanisms, and oxygen molecules diffuse directly through the membrane without the need for carrier proteins.