PATHOLOGY

PATHOLOGY MCQ

CELL DAMAGE

Question [CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
What is the cell membrane?
A
Billipid layer embedded with proteins
B
Lipid synthesis and metabolism
C
Sire of synthesis
D
DNA
Explanation: 

Detailed explanation-1: -Biological membranes consist of a continuous double layer of lipid molecules in which membrane proteins are embedded. This lipid bilayer is fluid, with individual lipid molecules able to diffuse rapidly within their own monolayer. The membrane lipid molecules are amphipathic. The most numerous are the phospholipids.

Detailed explanation-2: -Proteins embedded within the phospholipid bilayer carry out the specific functions of the plasma membrane, including selective transport of molecules and cell-cell recognition.

Detailed explanation-3: -The cell membrane (or plasma membrane) is a thin, structured layer of phospholipid and protein molecules that completely envelopes the cell. There are two layers phospholipid molecules with phosphate heads on the surfaces and lipid tails on the inside. Proteins are embedded in this layer.

Detailed explanation-4: -Integral proteins are embedded in the phospholipid bilayer, and also called transmembrane proteins. Often times these integral proteins serve as channels through which molecules move across the cell membrane.

There is 1 question to complete.