Peptidoglycan is cross-linked between what constituents in gram-negative bacteria? A. N-acetylglucosamine residues B. N-acetylmuramic acid residues...
Peptidoglycan is cross-linked between what constituents in gram-negative bacteria?
A. N-acetylglucosamine residues
B. N-acetylmuramic acid residues
C. glycine amino acids
D. DAP and D-alanine amino acids
E. A & C F. None of the above
Homework Answers
Option C
Gram negative bacteria is the one which gives red colour after gram staining technique. The outermost covering in this bacteria is lipopolysaccharide. This is covered by some molecules of diaminopimelic acid or DAPA.
Inner to lipopolysaccharide is a thin layer of peptidoglycan. Peptidoglycan is made up of alternating units of N-acetylglucosamine and N-acetylmuramic acid. The sugar units are connected to each other by pentaglycine linkages.
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Peptidoglycan is cross-linked between what constituents in
gram-negative bacteria?
A. N-acetylglucosamine residues
B. N-acetylmuramic acid residues...
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e.) is lacking a cell wall
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