Microbiology Trivia Questions Quiz!

83 Questions | Total Attempts: 2531

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Microbiology Trivia Questions Quiz!

The study of microbiology covers the area of science that deals with microscopic organisms, best defined as organisms so small that you typically cannot see them with the naked eye. Can you identify the different kinds of microorganisms out there – bacteria, fungi, protozoa, viruses – and tell us all about them and how they’re studied? Take the following quiz to find out just how much you know about them! Good luck!


Questions and Answers
  • 1. 
    Who proved that microorganisms cause disease?
    • A. 

      Pasteur

    • B. 

      Van Leeuwenhoek

    • C. 

      Koch

    • D. 

      Hooke

  • 2. 
    Nitrogen bases are building blocks of:
    • A. 

      Lipids

    • B. 

      Deoxyribose

    • C. 

      Nucleotides

    • D. 

      Ribosomes

    • E. 

      None of these

  • 3. 
    Proteins are formed by amino acids connected by:
    • A. 

      Alpha 1,4-glycosidic bond

    • B. 

      Phosphodiester linkage

    • C. 

      Hydrogen bonds

    • D. 

      Peptide bonds

  • 4. 
    Which of the following is not a kingdom in the five-kingdom system?
    • A. 

      Protista

    • B. 

      Algae

    • C. 

      Plant

    • D. 

      Animal

    • E. 

      Monera

  • 5. 
    The best use of a negative stain is:
    • A. 

      To determine cell shape

    • B. 

      To see endospore

    • C. 

      To determine Gram reaction

    • D. 

      To determine motility

  • 6. 
    • A. 

      Substrate level phosphorylation

    • B. 

      Oxidative level phosphorylation

  • 7. 
    Place the following steps in the correct sequence: 1 - Staining; 2- Making a smear; 3 - Fixing
    • A. 

      1-2-3

    • B. 

      1-3-2

    • C. 

      3-2-1

    • D. 

      2-3-1

  • 8. 
    Which of the following chemicals is found only in the outer membrane of Gram-negative bacteria?
    • A. 

      Plasmid

    • B. 

      Teichoic acid

    • C. 

      Flagella

    • D. 

      Lipopolysaccharide

    • E. 

      Peptidoglycan

  • 9. 
    • A. 

      The cell wall of G+ is much thicker than G-

    • B. 

      In Gram stain, G- are blue (purple) and G+ are pink (red)

    • C. 

      G+ and NOT G- contain teichoic acid in their cell wall

    • D. 

      In Gram stain, G+ are blue (purple) and G- are pink (red)

  • 10. 
    All of the following statements are true of gram-positive cells except which one?
    • A. 

      Gram positive cells have more peptidoglycan

    • B. 

      Gram positive cells have endotoxin

    • C. 

      Gram positive cells are sensitive to penicillin

    • D. 

      Gram positive cells are decolorized by alcohol-acetone

  • 11. 
    Which of the following statements are about a gram-negative cell wall is not true?
    • A. 

      It has teichoic acids

    • B. 

      It contains an endotoxin

    • C. 

      It protects the cell from osmotic lysis

    • D. 

      It maintains the shape of the cell

  • 12. 
    Which of the following is not a kingdom in the five-kingdom system?
    • A. 

      Animal

    • B. 

      Fungi

    • C. 

      Monera

    • D. 

      Plant

    • E. 

      Virus

  • 13. 
    Which of the following chemical bonds is the strongest?
    • A. 

      Ionic bond

    • B. 

      Covalent bond

    • C. 

      Hydrogen Bond

    • D. 

      They all have the same strength

  • 14. 
    Bacterial cell membrane DOES NOT contain:
    • A. 

      Phospholipids

    • B. 

      Proteins

    • C. 

      Glycoproteins

    • D. 

      Lipids

    • E. 

      Nucleic acids

  • 15. 
    All of the following can be found in mitochondria except:
    • A. 

      Circular DNA

    • B. 

      Ribosome

    • C. 

      ATP-generating mechanism

    • D. 

      Electron transport system

    • E. 

      Cell wall

  • 16. 
    This microscope uses an ultraviolet light source.
    • A. 

      Dark field microscope

    • B. 

      Fluorescence microscope

    • C. 

      Electron microscope

    • D. 

      Compound light microscope

  • 17. 
    These molecules are the primary building blocks of the plasma membrane in cells
    • A. 

      Carbohydrates

    • B. 

      Nucleic acids

    • C. 

      Proteins

    • D. 

      Lipids

  • 18. 
    Which of the following does not contribute to the hydrophobic interaction?
    • A. 

      Ionic interaction between hydrophobic molecules

    • B. 

      Proximity of hydrophobic molecules

    • C. 

      Increase entropy

    • D. 

      Exclusion of water

  • 19. 
    These are the primary molecules making up plasma membrane in cells
    • A. 

      Nucleic acids

    • B. 

      Carbohydrates

    • C. 

      Proteins

    • D. 

      Lipids

  • 20. 
    This is not a major bioelement
    • A. 

      Sulfur

    • B. 

      Nitrogen

    • C. 

      Hydrogen

    • D. 

      Magnesium

    • E. 

      Phosphate

  • 21. 
    A protein's function depends upon its unique conformation. Which level of protein folding achieves this conformation?
    • A. 

      Primary structure

    • B. 

      Beta sheet

    • C. 

      Alpha helix

    • D. 

      Secondary structure

    • E. 

      Tertiary structure

  • 22. 
    Which forces/bonds are involved in quaternary structure of proteins?
    • A. 

      Hydrogen bond, S-S bridges, Van der Waals forces, peptide bonds

    • B. 

      Hydrogen bond, S-S bridges, Van der Waals forces, peptide bonds, and hydrophobic interactions

    • C. 

      Hydrogen bond, S-S bridges, peptide bonds

    • D. 

      Hydrogen bond, S-S bridges, Van der Waals forces, hydrophobic interactions

  • 23. 
    This is not an internal structure of a bacteria
    • A. 

      Ribosome

    • B. 

      Plasmid

    • C. 

      Fimbriae

    • D. 

      Nucleoid

  • 24. 
    You can find nucleotides in
    • A. 

      DNA

    • B. 

      Amino acids

    • C. 

      Fatty acids

    • D. 

      Proteins

    • E. 

      Carbohydrates

  • 25. 
    Which are of microbiolgy studies fungi?
    • A. 

      Mycology

    • B. 

      Parasitology

    • C. 

      Biotechnology

    • D. 

      Immunology

    • E. 

      Bioremediation