Question

Which of the following is exposed on the outer surface of a gram-negative bacterium?

a.

O-antigen of lipopolysaccharide (LPS)

b.

Polysaccharide portion of lipoteichoic acid (LTA)

c.

Braun lipoprotein

d.

Electron transport system components

Answer: (a).O-antigen of lipopolysaccharide (LPS)

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Q. Which of the following is exposed on the outer surface of a gram-negative bacterium?

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