The central region of the cell membrane is
A) protein and hydrophilic
B) phosphate and hydrophilic
C) phosphate and hydrophobic
D) lipid and hydrophobic
E) lipid and hydrophilic

Question

Quizplus · Accepted Answer

The central region of the cell membrane is composed of lipids, specifically phospholipids, which have a hydrophobic (water-fearing) tail and a hydrophilic (water-loving) head. This creates a barrier that separates the inside and outside of the cell and controls the movement of molecules in and out of the cell. Proteins are embedded within this lipid bilayer, but they are not the primary component of the central region of the membrane. Phosphates are present in the polar head of phospholipids and are therefore hydrophilic, but they are not the only component of the central region of the membrane.

The Central Region of the Cell Membrane Is