About Microbiology

Following are some of the multiple choice questions on the Microbiology with answers that will help the students in developing their knowledge.

Microbiology MCQ

1. Gram positive bacteria

  • E.coli
  • Lactobacillus sp.
  • Pseudomonas sp.
  • All of the these

2. Which disease is caused by bacteria?

  • Tuberculosis
  • Cancer
  • Ringworm
  • All of above

3. Microbiology is the study of

  • small animals
  • microscopic organisms
  • diseases
  • health

4. Gram staining is an example of

  • Acid fast staining
  • Simple staining
  • Negative staining
  • Differential staining

5. Which of these is responsible for catalyzing the formation of an rna primer?

  • enzyme
  • Primase
  • Formulation
  • All of above

6. How do viruses reproduce

  • They take over the living cells machinery
  • They slide in the cell on their own
  • They can reproduce themselves
  • They put themselves in our bloodstream first

7. Are viruses alive ?

  • yes
  • no

8. Expand MMR

  • Measles Mumps Rubella
  • Malaria malaria rhehasus
  • Monkey Month Resists
  • Mango mangi red

9. The bacterium that is most commonly used in genetic engineering is

  • E.coli
  • Klebsiella
  • Bacillus substilus
  • Staphylococcus auerus

10. What is ring worm caused by?

  • Virus
  • Bacteria
  • Fungi
  • Parasite

11. Most bacteria are

  • Harmful
  • Helpful
  • Begnin
  • Cancer

12. In electron microscope, what material is used as an objective lens?

  • Magnetic coils
  • Superfine glass
  • Electrons
  • Aluminium foils

13. What is the backbone of DNA made of?

  • Glucose and Nitrogen
  • Deoxyribose and Nitrogen
  • Deoxyribose and Phosphate
  • Deoxyribose and Sulfate

14. Aeromicrobiology refers to

  • Study of living microbes
  • study of Algae
  • Study of living microbes which are suspended in the air
  • none of the above

15. Why is Taq used in PCR?

  • It is a specific DNA Primer
  • It is a heat stable polymerase
  • It is specific to the target probe
  • It does not need a cofactor

16. What is RFLP used for?

  • Detecting PCR products
  • Amplify nucleic acids
  • Used for Eastern blot
  • DNA fingerprinting

17. How large are viruses ?

  • 100-150 nm
  • 300-600nm
  • 20-200 nm
  • 10-100nm

18. What types of cells can Viruses infect

  • Only bacterial cells
  • Only animal cells
  • Only prokaryotic ones
  • all of them

19. Organisms referred to by both genus and specific epithet are both either:

  • underlined
  • italicized
  • bolded
  • Both A & B

20. Prokaryotes lack:

  • nucleus
  • flagella
  • cilia
  • cell wall

21. TRUE/ FALSE:Fungi are considered to be prokaryotes.

  • TRUE
  • FALSE

22. TRUE/ FALSE:Bacteria use appendages such as flagella to move around.

  • TRUE
  • FALSE

23. True/ False:Bacteria do NOT have a cell wall.

  • TRUE
  • FALSE

24. Which of these can be referred to as being "strepto-" in terms of bacterial arrangement?** Check ALL that apply **

25. ___________ is the scientist who invented the system of nomenclature for microbes in use today.

  • Robert Hooke
  • Francesco Redi
  • Carolus Linnaeus
  • None of the above

26. Check all that apply:These are the major group of microbes

  • bacteria
  • viruses
  • fungi
  • algae
  • protons

27. A tapeworm lives in the intestines of its host. Which example best describes the relationship between the tapeworm and its host?

  • The tapeworm benefits from its host; however, the host is not affected.
  • The tapeworm does not benefit from its host, but the host does benefit.
  • The tapeworm benefits from its host, and the host is negatively affected.

28. Microorganism that reproduces in the cells of other living things.

  • virus
  • bacteria

29. Organism that must live in another living thing in order to survive.

  • virus
  • parasite

30. An organism that lives on or in a host, and causes it harm while it takes its nutrients is called

  • a host
  • a parasite
  • a cell
  • a virus

31. Viruses multiply:

  • By conjungation
  • By taking over a cell's functions
  • By binary fission
  • Both sexually and asexually

32. Immunology is the study of...

  • the immune system
  • bacteria
  • viruses

33. Phycology is the study of...

  • fish
  • fungi
  • bacteria
  • algae

34. Mycology is the study of....

  • fungi
  • bacteria
  • viruses
  • dogs

35. When a virus invades a living cell, its _______takes over the cell's functions.

  • outer coat
  • genetic material
  • core
  • cytoplasm

36. _______________ are classified by their shape.

  • Bacteria
  • Flagella
  • Protists
  • Paramecium

37. Regarding exotoxins, which of the following is incorrect:

  • Can cause tetanus, diphtheria, and botulism
  • Vaccines are available
  • No Vaccines are available
  • They are heat sensitive

38. Which mechanism(s) allow microbes to avoid host defenses?

  • Creation of an actin tail to propel bacterium
  • Production of IgT proteases
  • Replication
  • All of the above

39. The most common way(s) for microbes to breach anatomical barriers are through:

  • Cuts and Wounds
  • Insects
  • Mucous Membranes
  • All of the Above

40. ___________ indicates viral particles are circulating in the bloodstream.

  • Viremia
  • Toxemia
  • IDKremia
  • Bacteremia

41. The duration of symptoms for Tuberculosis (TB) can be described as:

  • Acute
  • Chronic
  • Latent
  • Chronic and/or Latent

42. Normal Microbiota is not beneficial.

  • True
  • False

43. Infection = Illness

  • True
  • False

44. Although many individuals contributed, Louis Pasteur is often given credit for formation of which theory?

  • Miasma
  • Spontaneous Generation
  • Causation
  • Germ

45. In what year did the World Health Organization declare the eradication of smallpox?

  • 1980

46. Which of the following modes of transmission were discussed in class?

  • ingestion
  • airborne
  • vector
  • droplet
  • All of above

47. This companies headquarters is located in Geneva, Switzerland.

  • WHO
  • CDC
  • BLHS
  • AARP

48. Microbes can be beneficial in the field of biotechnology.

  • True
  • False

49. Any disorder that produces symptoms in specific locations that aren't a result of physical injury defines which term?

  • pathogen
  • disease
  • virulence
  • vector

50. This individual determined the causative agent of cholera.

  • John Snow
  • Louis Pasteur
  • Alexander Fleming
  • Robert Koch

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