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The main difference between Gram positiv...

The main difference between Gram positive and Gram negative bacteria lies in the composition of

A

cell wall

B

cell membrane

C

cytoplasm

D

flagella

Text Solution

Verified by Experts

The correct Answer is:
A
(a) Gram stain is a differential stain that differentiates bacteria into two groups - Gram +ve and Gram -ve. The basis of this differentiation lies in the composition (lipid contents) and thickness of cell wall of these bacteria. Bacteria are called Gram +ve, if they retain the crystal violet colour even after alcohol washing. Whereas, cell wall of Gram -ve bacteria is thin, rich in lipids and decolourise the crystal violet colour of Gram stain.
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