Which of the following types of molecules are hydrophilic and therefore excluded from the hydrophobic portion of the phospholipid bilayer?
A) transmembrane proteins
B) integral membrane proteins
C) peripheral membrane proteins
D) cholesterol

Question

Quizplus · Accepted Answer

Peripheral membrane proteins are located on the surface of the phospholipid bilayer and tend to be hydrophilic, which means they are excluded from the hydrophobic portion of the membrane. Transmembrane and integral membrane proteins, however, are embedded within the hydrophobic region of the bilayer and typically have hydrophobic regions that allow them to interact with the lipid tails. Cholesterol is also a small, hydrophobic molecule that can interact with the hydrophobic portion of the bilayer.

Which of the Following Types of Molecules Are Hydrophilic and Therefore