Microbiology Midterm Review

144 Questions | Total Attempts: 2777

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Microbiology Midterm Quizzes & Trivia

Practice test for the Microbiology Midterm.


Questions and Answers
  • 1. 
    Disease-causing microorganisms are called
    • A. 

      Decomposers.

    • B. 

      Procaryotes.

    • C. 

      Pathogens.

    • D. 

      Eucaryotes.

    • E. 

      Fermenters.

  • 2. 
    The microorganisms that do not have a nucleus in their cells are called
    • A. 

      Decomposers.

    • B. 

      Procaryotes.

    • C. 

      Pathogens.

    • D. 

      Eucaryotes.

    • E. 

      Fermenters.

  • 3. 
    When humans manipulate the genes of microorganisms the process is called
    • A. 

      Bioremediation.

    • B. 

      Genetic engineering.

    • C. 

      Epidemiology.

    • D. 

      Immunology.

    • E. 

      Taxonomy.

  • 4. 
    Which of the following is not considered a microorganism?
    • A. 

      Mosquito

    • B. 

      Protozoa

    • C. 

      Bacteria

    • D. 

      Viruses

    • E. 

      Fungi

  • 5. 
    Which of the following is a unique characteristic of viruses that distinguishes them from the other major groups of microorganisms?
    • A. 

      Cause human disease

    • B. 

      Lack a nucleus

    • C. 

      Cannot be seen without a microscope

    • D. 

      Contain genetic material

    • E. 

      Lack cell structure

  • 6. 
    Pasteur used swan-neck flasks in his experiments to prove that
    • A. 

      Air had "vital forces" capable of spontaneous generation.

    • B. 

      Microbial fermentation could be used to make wine.

    • C. 

      Dust in air was a source of living microorganisms.

    • D. 

      Microorganisms could cause disease.

    • E. 

      Microorganisms could be grown in laboratory infusions.

  • 7. 
    Spontaneous generation is the belief that
    • A. 

      Germs cause infectious diseases.

    • B. 

      Microbes are diverse and ubiquitous.

    • C. 

      Microbes placed in an infusion can grow in it.

    • D. 

      Aseptic techniques reduce microbes in medical settings.

    • E. 

      Living things arise from nonliving matter.

  • 8. 
    Koch's postulates are criteria used to establish that
    • A. 

      Microbes are found on dust particles.

    • B. 

      A specific microbe is the cause of a specific disease.

    • C. 

      Life forms can only arise from preexisting life forms.

    • D. 

      A specific microbe should be classified in a specific kingdom.

    • E. 

      Microbes can be used to clean up toxic spills.

  • 9. 
    Which of the following is a scientific name?
    • A. 

      Bacteria

    • B. 

      Protista

    • C. 

      Species

    • D. 

      Bacillus subtilis

    • E. 

      Bacilli

  • 10. 
    The study of evolutionary relationships among organisms is called
    • A. 

      Biotechnology.

    • B. 

      Genetics.

    • C. 

      Recombinant DNA.

    • D. 

      Phylogeny.

    • E. 

      Taxonomy.

  • 11. 
    A scientist collects grass clippings to find the source of an outbreak of tularemia is an example of working in the field of
    • A. 

      Food microbiology.

    • B. 

      Epidemiology.

    • C. 

      Agricultural microbiology.

    • D. 

      Genetic engineering.

    • E. 

      Biotechnology.

  • 12. 
    Helminths are
    • A. 

      Bacteria.

    • B. 

      Protozoa.

    • C. 

      Molds.

    • D. 

      Parasitic worms.

    • E. 

      Infectious particles.

  • 13. 
    Organisms called parasites are
    • A. 

      Always classified in the kingdom Monera.

    • B. 

      Always harmful to their host.

    • C. 

      The decomposers in ecosystems.

    • D. 

      Always a virus.

    • E. 

      Free-living.

  • 14. 
    The surgeon who advocated using disinfectants on hands and in the air prior to surgery was
    • A. 

      Joseph Lister.

    • B. 

      Ignaz Semmelweis.

    • C. 

      Robert Koch.

    • D. 

      Louis Pasteur.

    • E. 

      Antonie van Leeuwenhoek.

  • 15. 
    Which of the following are the main decomposers of the earth?
    • A. 

      Bacteria and fungi

    • B. 

      Bacteria and viruses

    • C. 

      Algae and viruses

    • D. 

      Protists and fungi

    • E. 

      All organisms are decomposers

  • 16. 
    Which of the following diseases is transmitted by mosquitoes?
    • A. 

      Diarrheal diseases

    • B. 

      Tuberculosis

    • C. 

      Malaria

    • D. 

      Septicemia

    • E. 

      Influenza

  • 17. 
    All of the following are correct about prokaryotes except
    • A. 

      They are smaller than eukaryotes.

    • B. 

      They lack a nucleus.

    • C. 

      They are less complex than eukaryotes.

    • D. 

      They have organelles.

    • E. 

      They are found nearly everywhere.

  • 18. 
    Which of the following is the correct way to write the scientific name of this bacterium?
    • A. 

      Staph Aureus

    • B. 

      Staphylococcus Aureus

    • C. 

      Staphylococcus aureus

    • D. 

      Staphylococcus Aureus

    • E. 

      S. Aureus

  • 19. 
    Which of the following diseases probably involves microbial infection?
    • A. 

      Gastric ulcers

    • B. 

      Female infertility

    • C. 

      Coronary artery disease

    • D. 

      Cervical cancer

    • E. 

      All of the choices are correct.

  • 20. 
    The Five I's of studying microorganisms include all of the following except
    • A. 

      Inoculation.

    • B. 

      Incubation.

    • C. 

      Infection.

    • D. 

      Isolation.

    • E. 

      Identification.

  • 21. 
    All of the following are examples of different types of microbiological media except
    • A. 

      Broth.

    • B. 

      Enriched.

    • C. 

      Agar.

    • D. 

      Petri dish.

    • E. 

      Gelatin.

  • 22. 
    The term that refers to the purposeful addition of microorganisms into a laboratory nutrient medium is
    • A. 

      Isolation.

    • B. 

      Inoculation.

    • C. 

      Immunization.

    • D. 

      Infection.

    • E. 

      Contamination.

  • 23. 
    Which of the following is essential for development of discrete, isolated colonies?
    • A. 

      Broth medium

    • B. 

      Differential medium

    • C. 

      Selective medium

    • D. 

      Solid medium

    • E. 

      Assay medium

  • 24. 
    A microbiologist inoculates Staphylococcus aureus into a culture medium.  Following incubation, both Staphylococcus aureus and Staphylococcus epidermidis are determined to be growing in this culture.  What is the most likely explanation?
    • A. 

      The microbiologist used too much inoculum.

    • B. 

      The culture is contaminated.

    • C. 

      The incubation temperature was incorrect.

    • D. 

      The culture medium must be selective.

    • E. 

      The culture medium must be differential.

  • 25. 
    A microbiologist inoculates Staphylococcus epidermidis and Escherichia coli into a culture medium.  Following incubation, only the E. coli grows in the culture.  What is the most likely explanation?
    • A. 

      The microbiologist used too much inoculum.

    • B. 

      The culture is contaminated.

    • C. 

      The incubation temperature was incorrect.

    • D. 

      The culture medium must be selective.

    • E. 

      The culture medium must be differential.

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