Basic Concepts Of Microbiology! Trivia Quiz

17 Questions

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Basic Concepts Of Microbiology! Trivia Quiz

One of the best ways in which you can ensure you have no problems when it comes to an area of study is by checking out how well you understand the basics. The quiz below is on the basics of Microbiology. Why don’t you try it out and see what your chances are of passing the final exam? All the best!


Questions and Answers
  • 1. 
    Agents that kill bacteria are said to be 
    • A. 

      Inhibitory

    • B. 

      Bacteriocidal

    • C. 

      Bacteriostatic

    • D. 

      All of the above

  • 2. 
    The complete elimination of all microorganisms, including viruses, is called
    • A. 

      Disinfection

    • B. 

      Sterilization

    • C. 

      Decontamination

    • D. 

      Any of the above, depending on the circumstances.

  • 3. 
    The process by which macromolecules lose their structure and ability to function is called
    • A. 

      Denaturation

    • B. 

      Sterilzation

    • C. 

      Thermal death

    • D. 

      None of the above

  • 4. 
    Of all the known antibiotics that have been identified in nature, __________ are clinically useful.
    • A. 

    • B. 

      8-10%

    • C. 

      18-20%

    • D. 

      25-30%

  • 5. 
    Which of the following are classified as electromagnetic radiation?
    • A. 

      Microwaves

    • B. 

      Uv rays

    • C. 

      X-rays and gamma rays

    • D. 

      All of the above

  • 6. 
    UV radiation is antimicrobial because
    • A. 

      The radiation generates significant amounts of heat within the given cell.

    • B. 

      The energy present causes modifications or breaks in the DNA molecules.

    • C. 

      The radiation generates magnetic poles that denature the cellular components.

    • D. 

      Of all of the above.

  • 7. 
    Interferon is
    • A. 

      Host specific

    • B. 

      Virus specific

    • C. 

      Both host and virus specific

    • D. 

      Neither host nor virus specific

  • 8. 
    Which statement is true about heat sterilization?
    • A. 

      Microbial death is more rapid at acidic pH.

    • B. 

      High concentrations of sugars and salts influence sterilization time.

    • C. 

      The amount of water in a substance is a major factor in heat resistance.

    • D. 

      All of the above are true.

  • 9. 
    Antimicrobial drugs are often grouped according to
    • A. 

      Molecular structure

    • B. 

      Spectrum of antimicrobial activity

    • C. 

      Mechanism of action

    • D. 

      All of the above

  • 10. 
    The β-lactam antibiotics (like penicillin)
    • A. 

      Inhibit plasma membrane synthesis.

    • B. 

      Inhibit cell wall synthesis.

    • C. 

      Inhibit protein synthesis.

    • D. 

      Prevent chromosomal replication.

  • 11. 
    Which is a unique macromolecule present in certain viruses that is a target for antiviral agents?
    • A. 

      Ribosomes

    • B. 

      DNA

    • C. 

      Reverse transcriptase

    • D. 

      RNA

  • 12. 
    Which of the following is a chemical agent that is used to inhibit microbial growth inside the human body
    • A. 

      Disinfectant

    • B. 

      Sanitizer

    • C. 

      Antiseptic

    • D. 

      Chemotherapeutic agent

  • 13. 
    • A. 

      The organism may be impermeable to the antibiotic.

    • B. 

      The organism may be able to pump out an antibiotic entering the cell.

    • C. 

      The organism may be able to alter the antibiotic to an inactive form.

    • D. 

      The organism may be protected from the drug by its nuclear membrane

  • 14. 
    Semisynthetic antibiotics
    • A. 

      Are natural antibiotics that have been chemically modified in the laboratory.

    • B. 

      Have an artificially constructed core that stimulates the production of "natural products."

    • C. 

      Are found in nature but their rate of production is enhanced in the laboratory.

    • D. 

      Are natural antibiotics that have been purified by artificial means.

  • 15. 
    The vegetative cells of Mycobacterium tuberculosis are resistant to many germicides because of
    • A. 

      An extra membranous layer between the cell wall and the plasma membrane.

    • B. 

      The complex nature of the plasma membrane itself.

    • C. 

      The waxy nature of the cell wall.

    • D. 

      The lattice work found in the glycocalyx.

  • 16. 
    The use of a HEPA filter in a biological safety cabinet is an application of filter sterilization using what type of filter?
    • A. 

      Depth filter

    • B. 

      Membrane filter

    • C. 

      Nucleation track filter

    • D. 

      Nucleospore filter

  • 17. 
    Important targets of antibiotics in Bacteria are
    • A. 

      The cell wall.

    • B. 

      The cytoplasmic membrane.

    • C. 

      DNA replication and transcription elements.

    • D. 

      All of the above