Question

multiple choice question
what is the purpose of the aquaporin?
a. allows water into a cell.
b. allows blood to absorb and retain more water.
c. releases blood.
d. releases hormones to help regulate water content.

Explanation:

Aquaporins are channel proteins that facilitate the transport of water across cell membranes. Option A correctly describes their function as allowing water into a cell. Option B is incorrect as aquaporins are not about blood's water absorption in that way. Option C is wrong as they don't release blood. Option D is incorrect as they don't release hormones; hormone release is for other molecules like ADH.

Answer:

A. Allows water into a cell.