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Home Work Micro Fall 2019. Chapts 6 and 12 Answer 10 questions = 50 points 1. Every virus can infect any organism. True or Fa


please help me to answer all these questions please please!!!

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1. false . No every virus cant not infect any organism . Some of them infect humans wheras others infect birds or mammals.

2. pencillinase disrupts the internal structure of penicillin and thus destroys the antimicrobial action of the drug and makes a drug resistant bCteria. Amoxicillin and ampicillin are slightly more lipid soluble therefore quicker in action and acts by inhibiting the synthesis of bacterial cell walls. It inhibits cross-linkage of a major component of the cell walls of both gram-positive and gram-negative bacteria – linear peptidoglycan polymer chains.

3. The lytic cycle involves the reproduction of viruses using a host cell to manufacture more viruses; the viruses then burst out of the cell wheras The lysogenic cycle involves the incorporation of the viral genome into the host cell genome, infecting it from within.

4. based in mechanism of action, antibiotics are classified in following groups:

  1. Pencillin: pencillin G
  2. cephalosporin: cefazolin
  3. fluoroquinolone: ciprofloxacin, levofloxacin
  4. aminoglycosides like amikacin, gentamycin
  5. Carbapenams like imipenam
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