Question

1.) What is the name of the proteins that only touch one side

2.) what is the overall name to proteins that touch both sides of the membrane?

3.) Describe the fluid mosaic model

Answer 1

1) Peripheral proteins - name itself says in the perfery of bilipid
layer of cell membrane
2) Integral proteins - integrated through out membrane touching both sides of cell membrane
3) Fluid mosaic model - fluidity of bilipid layer and proteins bobbing in sea of lipid bilayer
given by Singer and Nicolson to explain structure of plasma membrane
it is presently accepted model

Answer 2

Answer:

1)Ion channel receptors are usually multimeric proteins located in the plasma membrane. Each of these proteins arranges itself so that it forms a passageway or pore extending from one side of the membrane to the other.

2)Membrane proteins perform a variety of functions vital to the survival of organisms: Membrane receptor proteins relay signals between the cell's internal and external environments. Transport proteins move molecules and ions across the membrane. ... Cell adhesion molecules allow cells to identify each other and interact.

3)The fluid mosaic model describes the structure of the plasma membrane as a mosaic of components —including phospholipids, cholesterol, proteins, and carbohydrates—that gives the membrane a fluid character. ... The main fabric of the membrane is composed of amphiphilic or dual-loving, phospholipid molecules.