Bacteria Morphology
Periplasm is

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

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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
second outer membrane that helps to retain the crystal violet stain
thick capsule that traps the crystal violet stain

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Bacteria Morphology
The next to last step in peptidoglycan biosynthesis is

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

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