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Question

Which one occurs in the cell walls of Gram (+) bacteria only?

A
Peptidoglycan
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B
Lipopolysaccharide
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C
Teichoic acid
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D
None of the above
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Solution

The correct option is C Teichoic acid
Teichoic acids are found within the cell wall of most Gram-positive bacteria such as species in the genera Staphylococcus, Streptococcus, Bacillus, Clostridium, Corynebacterium, and Listeria, and appear to extend to the surface of the peptidoglycan layer.
So, C is the correct option.

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