Quiz: Microbiology Questions And Answers! Trivia Test

46 Questions | Total Attempts: 17

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Quiz: Microbiology Questions And Answers! Trivia Test

Are you looking for some microbiology questions and answers to help you perfect your understanding before you sit for an exam? If you said yes, you are in luck as the quiz below is exactly what you need, how about you check it out and see how much work you need to put in, All the best and keep revising!


Questions and Answers
  • 1. 
    When humans manipulate the genes of microorganisms the process is called
    • A. 

      Bioremediation

    • B. 

      Genetic engineering

    • C. 

      Epidermiology

    • D. 

      Immunology

    • E. 

      Taxonomy

  • 2. 
    The smallest and most significant taxon is
    • A. 

      Genus

    • B. 

      Species

    • C. 

      Kingdom

    • D. 

      Family

    • E. 

      Phylum

  • 3. 
    Which kingdom does not contain any eukaryotes?
    • A. 

      Monera

    • B. 

      Protista

    • C. 

      Mycetae

    • D. 

      Plantae

    • E. 

      Animalia

  • 4. 
    Which of the following is a scientific name?
    • A. 

      Bacteria

    • B. 

      Protista

    • C. 

      Species

    • D. 

      Bacillus subtilis

    • E. 

      Bacilli

  • 5. 
    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

  • 6. 
    When assigning a scientific name to an organism
    • A. 

      The species name is capitalized

    • B. 

      The species name is placed first

    • C. 

      The species name can be abbreviated

    • D. 

      Both genus and species name are capitalize

    • E. 

      Both genus and species name are italicized or underlined

  • 7. 
    Which of the following is a taxon that contains all the other taxa listed?
    • A. 

      Species

    • B. 

      Phylum

    • C. 

      Kingdom

    • D. 

      Genus

    • E. 

      Family

  • 8. 
    All of the following pertain to photosynthesis except
    • A. 

      It occurs only in members of the kingdom Plantae

    • B. 

      Carbon dioxide is converted to organic material

    • C. 

      It contributes to the oxygen content in the atmosphere

    • D. 

      It is fueled by light

    • E. 

      It is important to each ecosystem's flow of energy and food

  • 9. 
    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

  • 10. 
    In Whittaker's system, the protozoa and algae are classified in the kingdom.
    • A. 

      Monera

    • B. 

      Protista

    • C. 

      Mycetae

    • D. 

      Plantae

    • E. 

      Animalia

  • 11. 
    Helminths are
    • A. 

      Bacteria

    • B. 

      Protozoa

    • C. 

      Molds

    • D. 

      Parasitic worms

    • E. 

      Infectious particles

  • 12. 
    Where are you most likely to find bacteria belonging to the domain Archaea?
    • A. 

      A human's large intestine

    • B. 

      In a hot spring

    • C. 

      A pond

    • D. 

      A sewage tratment plant

    • E. 

      A beer production facility

  • 13. 
    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

  • 14. 
    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

  • 15. 
    The microorganisms that recycle nutrients by breaking down dead matter and wastes are called
    • A. 

      Decomposers

    • B. 

      Procaryotes

    • C. 

      Pathogens

    • D. 

      Eucaryotes

    • E. 

      Fermenters

  • 16. 
    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

  • 17. 
    A scientist discovers a new microbial species. It is a single-celled eucaryote without cell walls. In which kingdom will it likely be classified?
    • A. 

      Monera

    • B. 

      Protista

    • C. 

      Fungi

    • D. 

      Animalia

    • E. 

      Plantae

  • 18. 
    Disease-causing microorganisms are called
    • A. 

      Decomposers

    • B. 

      Procaryotes

    • C. 

      Pathogens

    • D. 

      Eucaryotes

    • E. 

      Fermenters

  • 19. 
    The microorganisms that do not have a nucleus in their cells are called
    • A. 

      Decomposers

    • B. 

      Procaryotes

    • C. 

      Pathogens

    • D. 

      Eucaryotes

    • E. 

      Fermenters

  • 20. 
    Taxonomy does not involve
    • A. 

      Nomenclature

    • B. 

      Classification

    • C. 

      Taxa

    • D. 

      Identification

    • E. 

      Koch's postulates

  • 21. 
    Select the correct descending taxonomic hierarchy (left to right)
    • A. 

      Family, order, class

    • B. 

      Family, genus, species

    • C. 

      Genus, species, family

    • D. 

      Class, phylum, order

    • E. 

      Kingdom, domain, phylum

  • 22. 
    Which activity is an example of biotechnology?
    • A. 

      Bacteria in the soil secreting an antibiotic to kill competitors

    • B. 

      A microbiologist using the microscope to study bacteria

    • C. 

      Humans using yeast to make beer and wine

    • D. 

      Mycobacteria tuberculosis in the lungs causing tuberculosis

    • E. 

      Public health officials monitoring diseases in a community

  • 23. 
    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

  • 24. 
    Which of the following is not considered a microorganism?
    • A. 

      Mosquito

    • B. 

      Protozoa

    • C. 

      Bacteria

    • D. 

      Viruses

    • E. 

      Fungi

  • 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

  • 26. 
    Which of the following magnifies the specimen to produce the real image of the specimen?
    • A. 

      Condenser

    • B. 

      Objective lens

    • C. 

      Ocular lens

    • D. 

      Body

    • E. 

      Nosepiece

  • 27. 
    A microbiologist makes a fixed smear of bacterial cells and stains them with Loeffler's methylene blue. All the cells appear blue under the oil lens. This is an example of
    • A. 

      Negative staining

    • B. 

      Using an acidic dye

    • C. 

      Simple staining

    • D. 

      Using the acid-fast stain

    • E. 

      Capsule staining

  • 28. 
    A nutrient medium that has all of its chemical components identified and their precise concentrations known and reproducible, would be termed
    • A. 

      Complex

    • B. 

      Reducing

    • C. 

      Enriched

    • D. 

      Enumeration

    • E. 

      Synthetic

  • 29. 
    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

  • 30. 
    If a microbiologist is studying a specimen at a total magnification of 950X, what is the magnifying power of the objective lens if the ocular lens is 10X?
    • A. 

      100X

    • B. 

      950X

    • C. 

      85X

    • D. 

      850X

    • E. 

      95X

  • 31. 
    All of the following are correct about agar except
    • A. 

      It is flexible

    • B. 

      It melts at the boiling point of water (100^C)

    • C. 

      It is a source of nutrition for bacteria

    • D. 

      It solidifies below 42^C

    • E. 

      It is solid at room temperature

  • 32. 
    Which type of medium is able to distinguish different species or types of microorganisms based on an observable change in the colonies or in the medium?
    • A. 

      Differential

    • B. 

      Selective

    • C. 

      Enumeration

    • D. 

      Enriched

    • E. 

      Reducing

  • 33. 
    A common medium used for growing fastidious bacteria is
    • A. 

      Blood agar

    • B. 

      Trypticase soy agar

    • C. 

      Mannitol salt agar

    • D. 

      MacConkey medium

    • E. 

      A reducing medium

  • 34. 
    Bacteria that require special growth factors and complex organic substances are called
    • A. 

      Fastidious

    • B. 

      Pathogenic

    • C. 

      Harmless

    • D. 

      Anaerobic

    • E. 

      Aerobic

  • 35. 
    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

  • 36. 
    The primary purpose of staining cells on a microscope slide is to
    • A. 

      Kill them

    • B. 

      Secure them to the slide

    • C. 

      Enlarge the cells

    • D. 

      Add contrast in order to see them better

    • E. 

      See motility

  • 37. 
    All of the following are examples of different types of microbiological media except
    • A. 

      Broth

    • B. 

      Enriched

    • C. 

      Agar

    • D. 

      Petri dish

    • E. 

      Gelatin

  • 38. 
    A media is designed that allows only Staphylococci to grow. In addition, S. aureus colonies have a yellow halo around them and other staphylococci appear white. This type of media is
    • A. 

      Selective only

    • B. 

      Differential only

    • C. 

      Both selective and differential

    • D. 

      A reducing media

    • E. 

      Enriched

  • 39. 
    Which of the following will result when 1% to 5% agar is added to nutrient broth, boiled and cooled?
    • A. 

      A pure culture

    • B. 

      A mixed culture

    • C. 

      A solid medium

    • D. 

      A liquid medium

    • E. 

      A contaminated medium

  • 40. 
    The Gram stain, acid-fast stain and endospore stain have the following in common:
    • A. 

      Used on a wet mount of the specimen

    • B. 

      Use heat to force the dye into cell structures

    • C. 

      Outcome based on cell wall differences

    • D. 

      Use a negative stain technique

    • E. 

      Are differential stains

  • 41. 
    All of the following pertain to the fluorescence microscope except it
    • A. 

      Uses electron's to produce a specimen image

    • B. 

      Type of compound microscope

    • C. 

      Requires the use of dyes like acridine and fluorescein

    • D. 

      Commonly used to diagnose certain infections

    • E. 

      Requires an ultraviolet radiation source

  • 42. 
    A pure culture contains only
    • A. 

      One species of microorganism

    • B. 

      Bacteria

    • C. 

      A variety of microbes from one source

    • D. 

      A variety of species from the same genus

    • E. 

      None of the choices are correct

  • 43. 
    The five I's of studying microorganisms include all of the following except
    • A. 

      Inoculation

    • B. 

      Incubation

    • C. 

      Infection

    • D. 

      Isolation

    • E. 

      Identification

  • 44. 
    Which of the following puts the Five "I"s in their correct order?
    • A. 

      Inoculation, incubation, isolation, inspection, identification

    • B. 

      Isolation, inspection, inoculation, incubation, identification

    • C. 

      Incubation, inspection, isolation, identification, inoculation

    • D. 

      Inspection, identification, isolation, incubation, inoculation

    • E. 

      Inspection, isolation, incubation, inoculation, identification

  • 45. 
    This microscope does not use light in forming the specimen image:
    • A. 

      Bright-field

    • B. 

      Dark-field

    • C. 

      Phase-contrast

    • D. 

      Fluorescence

    • E. 

      Electron

  • 46. 
    The type of microscope in which you would see brightly illuminated specimens against a black background is
    • A. 

      Bright-field

    • B. 

      Dark-field

    • C. 

      Phase-contrast

    • D. 

      Fluorescence

    • E. 

      Electron