Microorganism Qiuz 1

55 Questions | Total Attempts: 277

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Microorganism Quizzes & Trivia

Microorganisms – or microbes – are microscopic organisms that can exist in their single-celled form, or in a colony of cells. They are organisms that cannot be seen with the naked eye, but with a microscope, hence the name.


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

      Decomposers

    • B. 

      Procaryotes

    • C. 

      Pathogens

    • D. 

      Eucaryotes

    • E. 

      Fermenters

  • 2. 
    The microorganisms that recycle nutrients by breaking down dead matter and wastes are called
    • A. 

      Decomposers

    • B. 

      Prokaryotes

    • C. 

      Pathogens

    • D. 

      Eukaryotes

    • E. 

      Fermenters

  • 3. 
    The microorganisms that do not have a nucleus in their cells are called
    • A. 

      Decomposers

    • B. 

      Prokaryotes

    • C. 

      Pathogens

    • D. 

      Eukaryotes

    • E. 

      Fermenters

  • 4. 
    All microorganisms are best defined as organisms that
    • A. 

      Cause human disease

    • B. 

      Lack a cell nucleus

    • C. 

      Are infectious particles

    • D. 

      Are too small to be seen with the unaided eye

    • E. 

      Can only be found growing in laboratories

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

      Cause human disease

    • B. 

      Lack a nucleus

    • C. 

      Cannot be seen without a microscope

    • D. 

      Contain genetic material

    • E. 

      Lack cell structure

  • 6. 
    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

  • 7. 
    Which of the following is a proper scientific name?
    • A. 

      Streptoccoci pyogenes

    • B. 

      Bacillus subtilis

    • C. 

      B. subtilis

    • D. 

      Bacillus subtilis

    • E. 

      Streptocci

  • 8. 
    The study of evolutionary relationships among organisms is called
    • A. 

      Biotechnology

    • B. 

      Genetics

    • C. 

      Recombinant DNA

    • D. 

      Phylogeny

    • E. 

      Taxonomy

  • 9. 
    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. 

      Antonis van leewenhoek

  • 10. 
    The term sterile means free of all life forms
    • A. 

      True

    • B. 

      False

  • 11. 
    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

  • 12. 
    A friend has told you that he thinks that the world would be a safer place if all bacteria could be destroyed. Which of the following would be true if his suggestion were carries out?
    • A. 

      There would be no infectious diseases in humans

    • B. 

      Pets would be free of disease

    • C. 

      Certain foods such as beer, cheese, or yogurt could not be made easily

    • D. 

      There would be no ability to make medicines

  • 13. 
    Anything that occupies space and has mass is called
    • A. 

      An electron

    • B. 

      Living

    • C. 

      Matter

    • D. 

      Energy

    • E. 

      Space

  • 14. 
    The subatomic particles that surround the nucleus are the
    • A. 

      Electrons

    • B. 

      Protons

    • C. 

      Neutrons

    • D. 

      Protons and neutrons

    • E. 

      Protons and electrons

  • 15. 
    Cations are
    • A. 

      Charged subatomic particles

    • B. 

      Atoms that have gained electrons

    • C. 

      Radioactive isotopes

    • D. 

      Capable of forming ionic bonds with anions

    • E. 

      Atoms without protons

  • 16. 
    The prominent building blocks of an enzyme are
    • A. 

      Nucleotides

    • B. 

      Glycerol and fatty acids

    • C. 

      Monosaccharides

    • D. 

      Phosphate, glycerol, fatty acids

    • E. 

      Amino acids

  • 17. 
    The polynucleotides strands of DNA are linked along their length by___________ bonds between the bases
    • A. 

      Covalent

    • B. 

      Ionic

    • C. 

      Van der Waals

    • D. 

      Double

    • E. 

      Hydrogen

  • 18. 
    The type of chemical bond linking amino acids together is a(n)
    • A. 

      Glycosidic bond

    • B. 

      Peptide bond

    • C. 

      Ester bond

    • D. 

      Ionic bond

    • E. 

      Hydrogen bond

  • 19. 
    Which of the following is the stored form of carbohydrates in animals?
    • A. 

      Glycogen

    • B. 

      Maltose

    • C. 

      Starch

    • D. 

      Cellulose

    • E. 

      Galactose

  • 20. 
    The o< helix and B-pleated sheet are examples of
    • A. 

      Primary structure

    • B. 

      Secondary structure

    • C. 

      Tertiary structure

    • D. 

      Quaternary structure

    • E. 

      Gamma structures

  • 21. 
    The five I's of studying microorganisms include all of the following except
    • A. 

      Inoculation

    • B. 

      Incubation

    • C. 

      Infection

    • D. 

      Isolation

    • E. 

      Identification

  • 22. 
    The term that refers to the purposeful assition of micoorganisms 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 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

  • 25. 
    A microbiologist inoculates Staphylococcus aureus into a culture medium. Following incubation both Staphylococcus aureus and Staphylococcus epidermidis are determined to be growing 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