Friday, 12 May 2017

Important component of cell wall | PGI May 2017 Preparations MCQ

PGI Quest Delhi Batch From 10 Aug to 20 Aug


Which important component of cell wall has carbohydrate moiety 

A. Phosphoglyceride 
B. Triacylglycerol 
C. Sphingomyelin 
D. Cholesterol 
E. GM2 Gangliosides



Ans. E. GM2 Gangliosides :
• The major lipids in mammalian membranes are
— Phospholipids
Glycosphingolipids
— Cholesterol
• Among these, lipid with carbohydrate component is glycosphingolipids. They are
—Cerebrosides
—Gangliosides
• Phosphoglycerides = Glycerol + Fatty acids + Phosphate + Nitrogenous or Non- Nitrogenous group (choline, ethanolamine, serine and inositol)
• Sphingomyelin fatty acid sphingosine + phosphate - Nitrogenous group