How Much Do You Actually Know About Microbiology? Quiz

50 Questions

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Microbiology Quizzes & Trivia

Do you consider yourself so smart when it comes to microbiology that no question will be that hard for you? The quiz below is exactly what you need to test out your microbiology skills and whether you stand a chance at acing the final exams. Why don’t you give it a shot and get to find out? All the best and share with the rest of your study group.


Questions and Answers
  • 1. 
    Which of the following end products is not associated with fermentation?
    • A. 

      Ethanol

    • B. 

      Acetyl CoA

    • C. 

      Lactic acid

    • D. 

      Pentoses

  • 2. 
    The most universal diagnostic staining technique for identification of bacteria is the ______.
    • A. 

      Simple

    • B. 

      Acid fast

    • C. 

      Gram

    • D. 

      Spore

  • 3. 
    Enzymes that are produced continuously are:
    • A. 

      Constitutive

    • B. 

      Induced

  • 4. 
    The complete aerobic respiration of glucose results in the net gain of:
    • A. 

      34 ATP

    • B. 

      4 ATP

    • C. 

      2 ATP

    • D. 

      38 ATP

  • 5. 
    Media which are chemically defined are ________,
    • A. 

      Nonsynthetic

    • B. 

      Synthetic

  • 6. 
    Another name for bacteria that are round in shape is:
    • A. 

      Bacillus

    • B. 

      Coccus

    • C. 

      Spirillum

    • D. 

      None of the above

  • 7. 
    All of the following are metallic co-factors except:
    • A. 

      Copper

    • B. 

      Vitamins

    • C. 

      Iron

    • D. 

      Zinc

  • 8. 
    A culture which contains unwanted microbes of uncertain identity is a ______ culture.
    • A. 

      Contaminated

    • B. 

      Pure (axenic)

  • 9. 
    The largest and least specific taxa (group) in a classification system are:
    • A. 

      Kingdoms

    • B. 

      Species

    • C. 

      Classes

    • D. 

      Order

  • 10. 
    Inward extensions of the cell membrane of bacteria as coiled passages or sacs in the cytoplasm are called:
    • A. 

      Plasmids

    • B. 

      Spores

    • C. 

      Granules

    • D. 

      Mesosomes

  • 11. 
    • A. 

      Anabolism only

    • B. 

      Catabolism only

    • C. 

      Both anabolism and catabolism

    • D. 

      None of these

  • 12. 
    All of the following are products of carbohydrate biosynthesis except:
    • A. 

      Capsules

    • B. 

      Proteins

    • C. 

      Glycocalyx

    • D. 

      Cell walls

  • 13. 
    The microscope which uses ultraviolet radiation as an illumination source is the _______ microscope.
    • A. 

      Fluorescence

    • B. 

      Electron

    • C. 

      Staining

    • D. 

      Phase-contrast

  • 14. 
    Which of the following is not an electron acceptor in aerobic respiration?
    • A. 

      Nitrate

    • B. 

      Oxygen

    • C. 

      Carbonate

    • D. 

      Sulfate

  • 15. 
    The cytochromes are associated with?
    • A. 

      Photosynthesis

    • B. 

      Fermentation

    • C. 

      Oxidative phosphorylation

    • D. 

      None of these

  • 16. 
    In aerobic bacteria the compound acetyl CoA enters into the:
    • A. 

      Electron transport chain

    • B. 

      Calvin cycle

    • C. 

      Citric acid cycle

    • D. 

      Glycolytic cycle

  • 17. 
    The orderly arrangement of organisms into groups is called:
    • A. 

      Nomenclature

    • B. 

      Identification

    • C. 

      Classification

    • D. 

      Division

  • 18. 
    Media that are designed (formulated) to grow a broad spectrum of microbes that do not have special growth requirements are:
    • A. 

      Enriched

    • B. 

      General purpose

  • 19. 
    Which of the following is an area in applied microbiology?
    • A. 

      Epidemiology

    • B. 

      Genetics

    • C. 

      Metabolism

    • D. 

      Biochemistry

  • 20. 
    The molecule _____ is a factor in the heat resistance of bacterial spores.
    • A. 

      Muramic acid

    • B. 

      Dipicolinic acid

    • C. 

      Citric acid

    • D. 

      Pyruvic acid

  • 21. 
    Small circular strands of DNA that confer protective traits to a bacterial cell are:
    • A. 

      Mesosomes

    • B. 

      Granules

    • C. 

      Pili

    • D. 

      Plasmids

  • 22. 
    Energy in the form of ATP is required for the synthesis of:
    • A. 

      Nucleic acids

    • B. 

      Proteins

    • C. 

      Carbohydrates

    • D. 

      All of these

  • 23. 
    Which of the following microorganisms does not have a cell wall?
    • A. 

      Gram positive bacteria

    • B. 

      Archaeobacteria

    • C. 

      Mycoplasmas

    • D. 

      Gram negative bacteria

  • 24. 
    Bacteria which cause disease are:
    • A. 

      Pathogenic

    • B. 

      Non-pathogenic

  • 25. 
    The surface filaments which are responsible for the motility of most bacteria are called:
    • A. 

      Pili

    • B. 

      Capsules

    • C. 

      Cell walls

    • D. 

      Flagella

  • 26. 
    The property of cells in the same species to vary in size and shape is called:
    • A. 

      Dimorphism

    • B. 

      Pleomorphism

    • C. 

      Induction

    • D. 

      Deduction

  • 27. 
    Which of the following is a characteristic of procaryotes?
    • A. 

      Endoplasmic reticulum

    • B. 

      Golgi apparatus

    • C. 

      Mitochondria

    • D. 

      Nuclear membrane absent

  • 28. 
    The major determinant in grouping bacteria into gram positive or gram negative organisms is variation in:
    • A. 

      Size of organisms

    • B. 

      Cell walls

    • C. 

      Nutrient requirements

    • D. 

      All of these

  • 29. 
    Bacterial flagella dispersed randomly over the surface of the cell are called:
    • A. 

      Lophotrichous

    • B. 

      Peritrichous

    • C. 

      Monotrichous

    • D. 

      Amphitrichous

  • 30. 
    The sites of protein synthesis in the bacterial cytoplasm are the:
    • A. 

      Nucleus

    • B. 

      Cell wall

    • C. 

      Ribosomes

    • D. 

      Nucleosomes

  • 31. 
    The arrangement of bacteria into chains is called:
    • A. 

      Diplococcus

    • B. 

      Staphylococcos

    • C. 

      Streptococcus

    • D. 

      Sarcinae

  • 32. 
    The lipopolysaccharide of the outer membrane of gram negative bacteria is responsible for its:
    • A. 

      Growth properties

    • B. 

      Shape

    • C. 

      Disease causing properties

    • D. 

      Size

  • 33. 
    The genetic information of bacteria is found in the ________ of the cell.
    • A. 

      Inclusions

    • B. 

      Nucleus

    • C. 

      Nucleoid

    • D. 

      Mesosome

  • 34. 
    The process in which an endospore changes into a vegetative cell is called:
    • A. 

      Fission

    • B. 

      Germination

    • C. 

      Sporulation

    • D. 

      Metabolism

  • 35. 
    In the kingdom Procaryote, bacteria with typical structures and functions are grouped into the:
    • A. 

      Archaebateria

    • B. 

      Eubacteria

  • 36. 
    A ______ medium contains one or more agents that inhibit the growth of a certain mircobe or microbes.
    • A. 

      Differential

    • B. 

      Selective

  • 37. 
    A ______ staining procedure contains two different colored dyes.
    • A. 

      Differential

    • B. 

      Simple

  • 38. 
    Which bacterial structure provides protection against engulfment by white blood cells?
    • A. 

      Cell membrane

    • B. 

      Flagella

    • C. 

      Capsules

    • D. 

      Genome

  • 39. 
    The movement of bacteria away from a repellant is called:
    • A. 

      Negative chemotaxis

    • B. 

      Positive chemotaxis

  • 40. 
    The molecule which can be the first step in aerobic respiration or fermentation is:
    • A. 

      Glyceraldehyde-phosphate

    • B. 

      Citric acid

    • C. 

      Lactic acid

    • D. 

      Pyruvic acid

  • 41. 
    An integrated series of sequential oxidation-reduction reactions in a bacterial cell is called:
    • A. 

      The citric acid cycle

    • B. 

      Glycolysis

    • C. 

      An electron transport system

    • D. 

      Fermentation

  • 42. 
    Which molecule is found only in the cell walls of gram positive bacteria?
    • A. 

      Teichoic acid

    • B. 

      N-acetyl glucosamine

    • C. 

      N-acetyl-muramic acid

    • D. 

      None of these molecules

  • 43. 
    The emergence of the science of Microbiology from a historical perspective is closely associated with the development of:
    • A. 

      Radioimmunoassays

    • B. 

      Chromatography

    • C. 

      Radioisotopic techniques

    • D. 

      Microscopes

  • 44. 
    The organelles of attachment which participate in transfer of genetic material between donor and recipient bacteria are:
    • A. 

      Pili

    • B. 

      Flagella

    • C. 

      Capsules

    • D. 

      Mesosomes

  • 45. 
    Enzymes which remain and function in a bacterial cell are:
    • A. 

      Endoenzymes

    • B. 

      Exoenzymes

  • 46. 
    Accumulations of insoluble deposits in the cytoplasm of bacteria cells are called:
    • A. 

      Vacuoles

    • B. 

      Vessicles

    • C. 

      Inclusions

    • D. 

      Chloroplasts

  • 47. 
    The process that involves introduction of microbes into the environment to restore stability or clean up toxic pollutants is called:
    • A. 

      Cultivation

    • B. 

      Bioremediation

    • C. 

      Innoculation

    • D. 

      Heat fixation

  • 48. 
    The sum of biochemical changes carried out by microorganisms that can be used to characterize them is called __________.
    • A. 

      Morphology

    • B. 

      Nutrition

    • C. 

      Metabolism

    • D. 

      Genetics

  • 49. 
    Fungi are classified in the Kingdom:
    • A. 

      Procaryote

    • B. 

      Myceteae

    • C. 

      Animalia

    • D. 

      Protista

  • 50. 
    The cytoplasmic membrane of bacteria functions as the _____ of eucaryotic organisms.
    • A. 

      Cell wall

    • B. 

      Chloroplasts

    • C. 

      Flagella

    • D. 

      Mitochondria