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B
Gram (−) bacteria
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C
Gram neutral bacteria
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D
All the above
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Solution
The correct option is B Gram (+) bacteria On the basis of composition of cell wall, the bacteria are classified into two groups, namely Gram positive and Gram negative bacteria. Cell wall of all bacteria is made up of peptidoglycan. The gram positive bacteria contains many layers of peptidoglycan. However, Gram negative bacteria contains single layer of peptidoglycan. Apart from this, it also contains an outer layer of lipopolysaccharide (LPS).