GENERAL HISTOLOGY

INTRODUCTION

CELL STRUCTURE

Question [CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
Function of the cell membrane to not allow the substance or substances to pass through the membrane.
A
permeable
B
impermeable
C
semi-permeable
D
None of the above
Explanation: 

Detailed explanation-1: -A membrane which allows certain substances to pass, but does not allow others to pass through it is called a selectively permeable membrane.

Detailed explanation-2: -What Do Membranes Do? Cell membranes serve as barriers and gatekeepers. They are semi-permeable, which means that some molecules can diffuse across the lipid bilayer but others cannot. Small hydrophobic molecules and gases like oxygen and carbon dioxide cross membranes rapidly.

Detailed explanation-3: -Answer and Explanation: Large molecules, polar molecules, and ions, cannot easily pass through the cell membrane. Large molecules, such as glucose, amino acids, and proteins, are simply too big to fit through the phospholipid bilayer.

Detailed explanation-4: -If any solute is not able to pass the membrane that is required by the cell, then facilitated diffusion can occur in which some proteins and channels present in the membrane help in the movement of such types of solutes across the cellular barrier.

There is 1 question to complete.