Question

The inner & outer surfaces of a membrane may have different properties due to:

A. different phospholipid compositions

B. exposed domains of integral membrane proteins

C. peripheral membrane proteins.

D. A and B

E. All of the above

With full explanations for a good rating please!

Answer 1

Ans:-d explaination

Membrane surface have asymmetric different character on two sides

1. There are the difference in the lipid composition between the sides of a membrane. According to the fluid mosaic model a lipid bilayer composed of phospholipids and cholesterol.and integral proteis are shown peripheral proteins may be loosely attached to the surface.

Property of phospholipids determine the kinds of movement they can undergo in a bilayer. Transverse movement from side to side of the bilayer is relatively slow.

2. Membrans also show sideness with respect to protein composition

.different catalytic protein appear on the two sides of the membrane

.carbohydrate is mostly on the outer surface of the cell membranes.it is typically attached to the portion of membrane protein that sticks out

3. Erythrocyte membrane provides a good model of membrane sideness.