Bacteria Morphology
Chemotaxis is a phenomenon of

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

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Bacteria Morphology
Gram positive cells have a

multiple layer of peptidoglycan that helps to retain the crystal violet stain
periplasmic space that traps the crystal violet
thick capsule that traps the crystal violet stain
second outer membrane that helps to retain the crystal violet stain

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Bacteria Morphology
Porins are located in

the periplasmic space of gram-negative bacteria
the cytoplasmic membrane of both gram-negative and gram-positive bacteria
the peptidoglycan layer of gram-positive bacteria
the outer membrane of gram-negative bacteria

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Bacteria Morphology
Flagella move the cell by

many flagella beating in a synchronous, whip-like motion
attaching to nearby particles and contracting
an individual flagellum beating in a whip-like motion
spinning like a propeller

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