Question

Comment on the statement “plasma membrane is made up of two components.”

Answer 1

Plasma membrane:

1. The plasma membrane, the cell's outermost layer, is composed of a bilayer of phospholipids and proteins.
2. The phospholipid bilayer, which creates a permanent barrier between two aqueous compartments, is the membrane's basic structural component.
3. Cholesterol, glycolipids, and phospholipids are the lipids found in the plasma membrane that aid in maintaining its fluidity.
4. Carbohydrates are also found in small amounts.
5. Different cells have different protein and lipid compositions.
6. The proteins might either be peripheral or integral, depending on their position.
7. Extrinsic membrane proteins, also known as peripheral membrane proteins, are membrane proteins that are connected to biological membranes but only briefly bind to those membranes.
8. These proteins either bind to integral membrane proteins or pierce the lipid bilayer in the periphery.
9. Common proteins that are a component of or interact with biological membranes are known as membrane proteins.
10. Depending on where they are, membrane proteins can be divided into a number of broad categories.
11. A form of membrane protein that is anchored firmly to the biological membrane is known as an integral, or intrinsic, membrane protein (IMP).
12. Although all IMPs are transmembrane proteins, not all IMPs are transmembrane proteins.
13. A sizeable portion of the proteins encoded in an organism's DNA is IMPs.
14. One phospholipid molecule has a three-carbon glycerol backbone, two fatty acid molecules attached to carbons 1 and 2, and one phosphate-containing group attached to carbon 3.