Microbiology [Course Exam Rationale 2026]

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Last updated 9:43 AM on 4/18/26
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7 Terms

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D) Swan-neck flask experiment

  1. Which contribution of Louis Pasteur directly led to the development of aseptic technique?
    A) Germ theory of disease
    B) Pasteurization
    C) Discovery of anaerobes
    D) Swan-neck flask experiment

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C) Pasteur's swan-neck flask

  1. A researcher claims that bacteria arose spontaneously in a nutrient broth left uncovered. Which historical experiment most directly refutes this claim while controlling for air exposure?
    A) Redi's meat experiment
    B) Needham's boiled broth
    C) Pasteur's swan-neck flask
    D) Koch's pure culture isolation

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C) Antibiotic resistance

  1. Plasmids are clinically significant because they frequently encode:
    A) Structural proteins
    B) Housekeeping genes
    C) Antibiotic resistance
    D) Metabolic enzymes only

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B) Siderophores

  1. Iron uptake is facilitated by compounds called:
    A) Chelators
    B) Siderophores
    C) Porins
    D) Catalases

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B) Mosquito-malaria

  1. Which is an example of biological transmission?
    A) Housefly-cholera
    B) Mosquito-malaria
    C) Fomite-influenza
    D) Droplet-TB

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C) Botulinum toxin

  1. Which of the following toxins causes flaccid paralysis?
    A) Tetanospasmin
    B) Diphtheria toxin
    C) Botulinum toxin
    D) Choleragen

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B) Voriconazole

  1. The drug of choice for invasive aspergillosis is:
    A) Nystatin
    B) Voriconazole
    C) Ketoconazole
    D) Griseofulvin