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BIOL 2320 exam 2 - micro questions with correct answers
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BIOL 2320 exam 2 - micro questions with correct answers
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BIOL 2320 exam 2 - microPenicillium chrysogenum (fungi) - source of some anti-biotic & semi-synthetics. - correct answer
✔✔Penicillin G
Penicillium griseofulvum (fungi) - correct answer ✔✔Griseofulvin
Acremonium spp. (fungi) - correct answer ✔✔Cephalophin
Amycolatopsis orientalis (bacteria) - correct answer ✔✔Vancomycin
Amycolatopsis rifamycinica (bacteria) - correct answer ✔✔Rifampin
Bacillus licheniformis (bacteria) - correct answer ✔✔Bacitracin
Bacillus polymyxa (bacteria) - correct answer ✔✔Polymyxin
Micromonospora purpurea - correct answer ✔✔Gentamicin
Pseudomonas fluorescens - correct answer ✔✔Mupirocin
Saccharopolyspora erythraea - correct answer ✔✔Erythromycin
Streptomyces griseus - correct answer ✔✔Streptomycin
Streptomyces fradiae - correct answer ✔✔Neomycin
Streptomyces aureofaciens - correct answer ✔✔Tetracycline
, Streptomyces venezuelae - correct answer ✔✔Chloramphenicol
Streptomyces nodosus - correct answer ✔✔Amphotericin B
Streptomyces avermitilis - correct answer ✔✔Ivermectin
Streptomyces noursei - correct answer ✔✔Nystatin
Bacitracin (antibacterial drugs that inhibit cell wall synthesis) - correct answer ✔✔1. Interference with
the movement of peptidoglycan precursors through the bacterial cell membrane to the cell wall.
2. Inhibition of RNA transcription.
3. Damage to the bacteria l cytoplasmic membrane.
Beta-Lactams - correct answer ✔✔bind to and deactivate the enzyme that cross-links the NAM subunits
of peptidoglycan
Cycloserine - correct answer ✔✔Analog of alanine that interferes with the formation of alanine -alanine
bridges between NAM subunits.
Ethambutol - correct answer ✔✔used in combination with other antimycobacterial drug
Isoniazid - correct answer ✔✔Blocks the gene for an enzyme that forms mycolic acid
Lipoglycopeptide - correct answer ✔✔directly interfere with the formation of certain alanine-alanine
bridge between NAM subunits.
Aminoglycosides (Antibacterial drugs that inhibit protein synthesis) - correct answer ✔✔Inhibit protein
synthesis by irreversibly binding to 30S subunit of prokaryotic ribosomes, which either causes the
ribosome to mistranslate mRNA, producing aberrant proteins, or causes premature release of the
ribosome from mRNA, stopping synthesis. Also bactericidal by destroying outer membranes of G-
bacteria
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