Question

The Gram negative bacteria detect and respond to chemical in their surrounding by

A

Lipopolysaccharide

B

Muramic acid

C

Porins

D

Volutin granules

E

Mesosomes

Hard

Solution

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Correct option is A)

When a decolourizer such as alcohol or acetone is added, it interacts with the lipids of the cell membrane. A Gram-negative cell loses its outer lipopolysaccharide membrane and the inner peptidoglycan layer is left exposed. The crystal violet complexes are washed from the Gram-negative cell along with the outer membrane.

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