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pharmacy Topic wise MCQs

Microbiology (Part-1 ) MCQs with Answers


1. The principle light- trapping pigment molecule in plants, Algae, & cyanobacteria is
a. Chlorophyll a
b. Chlorophyll b
c. Porphyrin
d. Rhodapsin

2. During Bio Geo chemical cycle some amount of elemental carbon was utilized by the microorganisms. The phenomenon is called as
a. Dissimilation
b. Immobilization
c. Decomposition
d. Neutralization

3. Who demonstrated that open tubes of broth remained free of bacteria when air was free of dust?
a. Abbc Spallanzani
b. John Tyndall
c. Francisco Redi
d. Pasteur

4. Spirulina belongs to
a. Xanthophyceae
b. Cyanophyceae
c. Rhodophyceae
d. Pheophyceae

5. Direct microscopic count can be done with the aid of
a. Neuberg chamber
b. Anaerobic chamber
c. Mineral oil
d. Olive oil

6. Father of Medical Microbiology is
a. Pasteur
b. Jenner
c. Koch
d. A.L.Hock

7. The term mutation was coined by
a. Pasteur
b. Darwin
c. Hugo devries
d. Lamark

8. Hybridoma technique was first discovered by
a. Kohler and Milstein
b. Robert Koch
c. ‘D’ Herelle
d. Land Steiner

9. Tuberculosis is a
a. Water borne disease
b. Air borne disease
c. Food borne disease
d. Atthropod borne disease

10. The main feature of prokaryotic organism is
a. Absence of locomotion
b. Absence of nuclear envelope
c. Absence of nuclear material
d. Absence of protein synthesis

11. Meosomes are also known as
a. Mitochondria
b. Endoplasmic reticulum
c. Plasmids
d. Chondroids

12. In electron microscope, what material is used as an objective lense?
a. Magnetic coils
b. Superfine glass
c. Aluminium foils
d. Electrons

13. Kuru disease in Humans is caused by
a. Bacteria
b. Viroides
c. Prions
d. Mycoplasma

14. Hanging drop method for motility study was first introduced by
a. Robert Koch
b. Louis Pasteur
c. Jenner
d. Leeuwenhock

15. The inventor of Microscope is
a. Galileo
b. Antony von
c. Pasteur
d. Koch

16. The causative organism of Rocky Mountain spotted fever was first described by
a. Howard Ricketts
b. da Rocha-lima
c. Both a and b
d. Robert Koch

17. Compound Microscope was discovered by
a. A.V. Lewenhoek
b. Pasteur
c. Janssen and Hans
d. None of these

18. Electron Microscope was discovered by
a. Prof. Fritz
b. Janssen and Hans
c. Knoll and Ruska
d. None of these

19. Mycorrhiza was first observed by
a. Funk
b. Frank
c. Fisher
d. Crick

20. The lethal dose required to kill 50% of the lab animals tested under standard called
a. ID b. LD50
c. ID50 d. MLD

21. Cold like symptoms are caused by which bacteria
a. Pseudomonas
b. E.coli
c. Haemophilus influenza
d. Haemophilus streptococcus

22. Staining material of gram positive bacterium is
a. Fast green
b. Haematoxylon
c. Crystal violet
d. Safranin

23. Bacteria that are responsible for fermentation of dairy milk are
a. Azetobacter
b. Rhizobium
c. Lactobacillus
d. Hay bacillus

24. Virus will contain
a. Cell membrane
b. Cell wall
c. DNA
d. DNA or RNA

25. Meosomes are the part of
a. Plasma membrane
b. ER
c. Lysosomes
d. Golgi

26. Bioleaching is done by
a. Protozoa
b. Bacteria
c. Algae
d. All of the above

27. Thylakoid is present in
a. Mitochondria
b. Chloroplast
c. ER
d. Golgi apparatus

28. Diphtheria is caused by
a. Corynebacterium
b. Staphylococcus
c. Streptococcus
d. None of these

29. An example for common air borne epidemic disease
a. Influenza
b. Typhoid
c. Encephalitis
d. Malaria

30. Bacillus is an example of
a. Gram positive bacteria
b. Gram negative bacteria
c. Virus
d. Viroid

31. Mordant used in grams staining is
a. Crystal violet
b. Iodine
c. Saffranin
d. All of these

32. Gram staining is an example for
a. Simple staining
b. Differential staining
c. Negative staining
d. None of these

33. The percentage of O2 required by moderate anaerobe is
a. 0%
b. < 0.5%
c. 2 – 8%
d. 5 – 10%

34. Spirochete is
a. Gonococci
b. Strphylococci
c. Treponema pallidum
d. Streptococci

35. Rod shaped bacteria are known as
a. Cocci
b. Comma forms
c. Bacilli
d. Plemorphic from

36. Thickness of cell wall ranges from
a. 9-10 nm
b. 12-13 nm
c. 10-25 nm
d. 30-40 nm

37. Bacterial capsule chemically composed of
a. Polypeptide
b. Polynucleotides
c. Polysaccharides
d. Polypeptides or polysaccharides

38. The motile bacteria is
a. Salmonella typhi
b. Klebsiella pneumoniae
c. Bacillus anthracis
d. Shigella flexneri

39. Bacteria multiply by
a. Spore formation
b. Simple binary fission
c. Conjugation
d. Gametes

40. Cell-wall is
a. Thick in Gram positive than Gram negative
b. Thick in Gram negative than Gram positive
c. Equal in both
d. In Gram negative cell-wall is absent

41. The Lipid content present in Gram positive bacterial cell-wall is
a. 1-10 %
b. 1-5 %
c. 2-8 %
d. None of these

42. Rickettsiae stained by this technique responds as
a. Gram positive
b. Gram negative
c. Between positive and negative
d. None of these

43. ‘Fluorescence’ was first observed by
a. Kohler
b. Coons
c. Both a and b
d. None of these

44. Most molds are capable of growing in the temperature range between
a. 0 oC – 25 oC
b. 0 oC – 35oC
c. 10 oC – 25 oC
d. 10 oC – 35 oC

45. Nitrite is converted into nitrate by bacteria?
a. Nitrosomonas
b. Nitrosocytes
c. Nitrobacter
d. Azatobacter

46. Bacillus Schlegelli is
a. Hydrogen – Oxydising bacteria
b. Sulphur – Oxydising bacteria
c. Iron-Oxidising bacteria
d. Nitrite oxidizing bacteria

47. Cholera vaccine gives protection for
a. 1 – 3 months
b. 3 – 6 months
c. 6 – 9 months
d. 9-12 months

48. Acid fast bacteria are
a. Neisseria
b. Staphylococci
c. Mycobacteria
d. All of the above

49. Lepromin test
a. Is negative in tubercular leprosy
b. Positive in lepromatous type
c. Indicated delayed hypersensitivity test
d. Indicates infection

50. Main cause for Cholera is
a. Poverty and insanitation
b. Mosquitoes
c. Toxin produced by pesticides
d. None of these


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