When Performing a Gram Stain on a Gram-Negative Organism,the Crystal

question 19

Multiple Choice

When performing a Gram stain on a gram-negative organism,the crystal violet is absorbed into this outer cell wall layer then washed away with the acid alcohol.What is the main component of the outer layer of the cell wall?

• A) Peptidoglycan
• B) Mycolic acid
• C) N-acetyl-d-muramic acid
• D) Lipopolysaccharide

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