Question

question 4
10 points
the process of molecules going against a concentration gradient that requires potential energy and a membrane protein is termed.
a active transport.
b active diffusion.
c facilitated diffusion.
d simple diffusion.
e osmosis.

Explanation:

Active transport is the movement of molecules against a concentration gradient. It requires energy (in the form of potential energy like ATP) and the help of membrane - bound proteins (carrier proteins or pumps). Facilitated diffusion and simple diffusion move molecules along the concentration gradient and do not require energy input. Osmosis is the diffusion of water across a semi - permeable membrane. There is no such thing as active diffusion.

Answer:

A. active transport