题目内容

The important part of lipopolysaccharide in outer membrane can act as endotoxin:

A. lipid A
B. specific polysaccharide
C. core polysaccharide
D. all three parts

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Which part of lipopolysaccharide in Gram negative cell wall is applied to determine the biotype of gram bacterium?

A. lipid A
B. specific polysaccharide
C. core polysaccharide
D. outer protein

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Which statement is not right about Gram-positive bacteria?

A. They have a thick cell wall, which retains crystal violet dye,
B. They contain teichoic acids in their cell walls,
C. They appear purple after Gram staining,
D. They have periplasmic space in the cell wall.

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In the peptidoglycan, tetrapeptide side chain is linked with NAM in chain of bisaccharide backbone.

A. 对
B. 错

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THe out membrane of Gram negative cell wall is symmetric bilipid layer.

A. 对
B. 错

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The important part of lipopolysaccharide in outer membrane can act as endotoxin:

A. lipid A B. specific polysaccharide C. core polysaccharide D. all three parts

Which part of lipopolysaccharide in Gram negative cell wall is applied to determine the biotype of gram bacterium?

Which statement is not right about Gram-positive bacteria?

In the peptidoglycan, tetrapeptide side chain is linked with NAM in chain of bisaccharide backbone.

THe out membrane of Gram negative cell wall is symmetric bilipid layer.

A. lipid A
B. specific polysaccharide
C. core polysaccharide
D. all three parts