The channel protein that accounts for why water can cross a membrane more quickly than expected is
A) ATP synthetase.
B) aquaporin.
C) the sodium-potassium pump.
D) integrin.

Question

Quizplus · Accepted Answer

Aquaporins are specialized channel proteins that are permeable to water molecules but exclude the passage of ions and other solutes. They have a unique 3D structure that allows water to cross a membrane more quickly than expected due to a specific pore size, polarity and hydrophobicity.

The Channel Protein That Accounts for Why Water Can Cross