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2 Written questions

2 Multiple choice questions

  1. Competitively inhibits D-alanine ligase enzyme so cannot syntheses from L to D-alanine

    Don't have crosslinking if not have D-alanine at the end
  2. Interferes with dephosphorylation of isoprenyl pyrophosphate; molecule carries peptidoglycan building blocks

2 True/False questions

  1. CephalosporinsCome from the fungus CephalosporiumAcremonium.

    Work by the same mechanisms as penicillin's; but work on gram (+), not effective against gram (-)

    Have beta-lactam ring with dihydrothiazine ring, makes more resistant to beta-lactamases


  2. Beta-Lactam AntibioticsPrevents cross-linking of peptides and synthesis of peptide strnd through autolysin activators. Does not allow enzyme to cross link peptide strands.

    Methicillin, Oxacillin, Nafcillin, Cloxacillin, Dicloxacillin