Bacteria Morphology
Chemotaxis is a phenomenon of

swimming towards a bacteria
swimming away of bacteria
swimming away or towards of bacteria in presence of chemical compound
None of these

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Bacteria Morphology
The cell wall of

gram-negative bacteria are thicker than gram-positive bacteria
both have same thickness but composition is different
gram-positive bacteria are thicker than gram-negative bacteria
none of these

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Bacteria Morphology
The next to last step in peptidoglycan biosynthesis is

removal of the subunit from bactoprenol
cross-linking the peptide side chains of peptidoglycan
synthesis of the NAM-peptide subunit
linking the sugar of the disaccharide-peptide unit to the growing peptidoglycan chain

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