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Question

Lipopolysaccharide is an important cell wall component of the

A
Gram-positive
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B
Gram-negative
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C
Acid fast bacteria
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D
Mycoplasmas
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Solution

The correct option is B Gram-negative
Gram-negative bacteria have a thin peptidoglycan layer(This is much thicker in Gram-positive bacteria) and have outer membrane containing lipopolysaccharides(much lesser in gram-positive). Mycobacterium contains large amounts of lipid substances within their cell walls called mycolic acids. These acids resist staining by ordinary methods such as a Gram-stain.

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