General Science - Biology MCQs

Q.  The Gram Positive Bacteria can be identified by the Gram staining because of the following reasons?

a. The cell walls have more lipids compared to peptidoglycan
b. The Cells walls have more Peptidoglycan compared to Lipids
c. The Cells membrane has more fatty acids
d. The plasma has Peptidoglycans


ANSWER: See Answer
 
The cell wall which is made up of Peptidoglycan as well as lipids gets violet due to the reaction of the CV+. After the decolorization with alcohol, the lipids gets dissolved and the bacteria with higher Peptidoglycan remain violet. These are called Gram Positive bacteria.
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