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

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. Are viruses alive ?

  • yes
  • no

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. Expand MMR

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

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

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

9. What is ring worm caused by?

  • Virus
  • Bacteria
  • Fungi
  • Parasite

10. Most bacteria are

  • Harmful
  • Helpful
  • Begnin
  • Cancer

11. What is the backbone of DNA made of?

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

12. What is RFLP used for?

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

13. 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

14. What types of cells can Viruses infect

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

15. How large are viruses ?

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

16. What is the main purpose of the immune system?

  • support the body through bones and muscles
  • get rid of waste from the body
  • protect the body from pathogens
  • move blood through the body

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

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

18. What is RT-PCR used for?

  • To detect PCR products as they are produced.
  • To quantify PCR products
  • To detect a viral load
  • To amplify RNA viruses

19. What advantage does the MALDI-TOF provide?

  • It takes minutes instead of days for  identification of pathogens
  • It can detect multiple targets
  • It is inexpensive
  • It can detect antibiotic resistance

20. What testing principle is utilized by the MALDI-TOF?

  • PCR
  • RT-PCR
  • Multiplex PCR
  • Mass Spectrometry

21. In gel electrophoresis, what separates the DNA fragments?

  • They are separated by an electrical field
  • They are separated by magnetic fields
  • They are separated by binding to the gel
  • They are separated by the electrical charge of the gel

22. _____is a prokaryotic microorganisms.

  • Virus
  • Algae
  • Fungi
  • Bacteria

23. To differentiate between Gram positive and Gram negative bacteria _____________________ procedure will be used.

  • Gram Staining

24. A Gram negative cell wall is __________ than a Gram positive one.

  • Thinner
  • Thin

25. ________________ is ability to produce disease in host organism.

  • pathogenicity

26. Endotoxin is extremely potent than exotoxin.

  • True
  • False

27. Bacteria endopsore usually occur in Gram positive bacteria.

  • True
  • False

28. The space between the cytoplasmic membrane and the outer membrane is called the periplasm.

  • True
  • False

29. Prokaryotic and eukaryotic cells have many differences, but they also share some common features. Which of the following may be found in either type of cell?

  • Golgi bodies
  • mitochondria
  • ribosomes
  • nucleus

30. Any organism in which the parasite obtains its nutrition.

  • host

31. This individual gave the first vaccine to 8 year old James Phipps.

  • Louis Pasteur
  • Robert Koch
  • Jonas Salk
  • Edward Jenner

32. The ______________ street pump was identified as the source for the cholera outbreak in London.

  • Broad

33. This individual determined the causative agent of cholera.

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

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

  • True
  • False

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

  • pathogen
  • disease
  • virulence
  • vector

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

  • WHO
  • CDC
  • BLHS
  • AARP

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

  • ingestion
  • airborne
  • vector
  • droplet
  • contact

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

  • 1980

39. Prokaryotes lack:Check ALL that apply

  • nucleus
  • flagella
  • cilia
  • cell wall

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

  • virus
  • parasite

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

  • virus
  • bacteria

42. 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.

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

  • bacteria
  • viruses
  • fungi
  • algae
  • protons

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

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

45. Organisms referred to by both genus and specific epithet are both either:*** Select all that apply

  • underlined
  • italicized
  • bolded
  • highlighted

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

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

  • TRUE
  • FALSE

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

  • TRUE
  • FALSE

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

  • TRUE
  • FALSE

50. 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

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