The main difference between Gram-positive (+v | vedclass

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(A) The primary difference between Gram-positive and Gram-negative bacteria is the composition and structure of their cell wall.Gram-positive bacteria

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Cell wall

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(A) The primary difference between Gram-positive and Gram-negative bacteria is the composition and structure of their cell wall.Gram-positive bacteria possess a thick layer of peptidoglycan (murein) in their cell wall,which retains the crystal violet stain.Gram-negative bacteria have a much thinner layer of peptidoglycan and an additional outer membrane containing lipopolysaccharides $(LPS)$,which prevents the retention of the crystal violet stain.

Column-$I$	Column-$II$
$(A)$ Halophiles	$(I)$ Gram-negative bacteria
$(B)$ Thermoacidophiles	$(II)$ Inhabit extremely salty areas
$(C)$ Spirochaetes	$(III)$ Responsible for methane production
$(D)$ Firmicutes	$(IV)$ Survive in acidic and high-temperature conditions
	$(V)$ Gram-positive bacteria

The main difference between Gram-positive $(+ve)$ and Gram-negative $(-ve)$ bacteria lies in their $........$.

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