Bacteria Morphology
Gram positive cells have a

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

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Bacteria Morphology
Periplasm is

the area between the inner and outer membranes of Gram-positive bacteria
the area between the inner and outer membranes of gram-negative bacteria
the area outside the cell membrane that is influenced by the polymers
the interior portion of mitochondria

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Bacteria Morphology
The cell wall of

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

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Bacteria Morphology
Flagella move the cell by

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

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