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
The next to last step in peptidoglycan biosynthesis is

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

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Bacteria Morphology
Porins are located in

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

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