The structure that separates the fluid outside the cell from the fluid inside the cell is the
A) cell membrane
B) nuclear membrane
C) membranous organelle
D) mitochondrial membrane
E) layer of glycoprotein

Question

Quizplus · Accepted Answer

The cell membrane, also known as the plasma membrane, is a phospholipid bilayer that separates the fluid inside the cell (cytoplasm) from the fluid outside the cell. It is the outermost boundary of the cell and serves as a selectively permeable barrier. The nuclear membrane separates the nucleus from the cytoplasm and is not responsible for separating the fluid outside the cell from the fluid inside the cell. Membranous organelles such as the endoplasmic reticulum, Golgi apparatus, and lysosomes are enclosed by their own membranes and do not separate the fluid outside the cell from the fluid inside the cell. Mitochondrial membranes are involved in the production of ATP and do not separate the fluid outside the cell from the fluid inside the cell. The layer of glycoprotein is not a specific structure that separates the fluid outside the cell from the fluid inside the cell.

The Structure That Separates the Fluid Outside the Cell from the Fluid