Bacteria Morphology
The last step in synthesis of peptidoglycan is

binding of penicillin to a membrane protein
attachment of a peptide to muramic acid
attaching two amino acids to form a cross-link
attachment of a portion of peptidoglycan to a membrane lipid

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Bacteria Morphology
Periplasm is

the area outside the cell membrane that is influenced by the polymers
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 interior portion of mitochondria

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Bacteria Morphology
Gram positive cells have a

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

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