MCQs On History Of Microbiology (Part 4)

1. The transfer of genetic material during transformation is proved basing on Griffith’s experiment by

a. Avery Macleod & Mc.Carthy
b. Lederberg & Taulum
c. Zinder & Lederberg
d. Watson & Crick

2. Phagocytic theory was proposed by

a. Louis Pasteur
b. Elie Metchnikoff
c. Behring
d. Widal

3. Anaphylaxia was first observed by

a. Parter & Richet
b. Coombs
c. Gell
d. None of these

4. Primary mediators in anaphylaxis

a. Histamine
b. Seratonin
c. Heparin
d. All of these

5. Arthus reaction was discovered by

a. Marrice Arthus
b. Von Perquit
c. Richet
d. Porter

6. Serum sickness reaction was discovered by

a. Marrice Arthus
b. Von perquit
c. Richet
d. Porter

7. Hybridoma technique was developed by

a. Kochler & Milston
b. Niel’s Jerne
c. Both a and b
d. None of these

8. Disease that effects many people at different countries is termed as

a. Sporadic
b. Pandemic
c. Epidemic
d. Endemic

9. If the vectors transmit the infection mechanically they are called

a. Biological vectors
b. Mechanical vectors
c. Biological reservoir
d. Both a and c

10. If a person can be infected by direct contact with infected tissue of another person, it is termed as

a. Indirect contact transmission
b. Attachment
c. Direct contact transmission
d. None of these

11. Reduction of virulence is known as

a. Exaltation
b. Attenuation
c. Both a and b
d. None of these

12. Enhancement of virulence is known as

a. Exaltation
b. Attenuation
c. Both a and b
d. None of these

13. The virulence of a pathogen is usually measured by

a. LD
b. MLD
c. ID
d. All of the above

14. The lethal dose required to kill 50% of the lab animals tested under standard called

a. ID
b. LD50
c. ID50
d. MLD

15. The most important virulence factors are

a. Adhesions
b. Invasiveness
c. Toxigenicity
d. Enzymes
e. All of the above

16. The ability of a pathogen to spread in ths host tissues after establishing the infection is known as

a. Adhesion
b. Invasiveness
c. Toxigenicity
d. None of these

17. Which is the following enzyme acts as a spreading factor?

a. Hyaluronidase
b. Coagulase
c. Catalase
d. DNase

18. Vibrio Cholerae was discovered by

a. Koch
b. Metchnikoff
c. John Snow
d. Virchow

19. E.coli was first isolated by

a. Louis Pasteur
b. Escherich
c. Shiga
d. Robert Koch

20. Mycobacterium tuberculosis was first discovered by

a. Robert Koch
b. Edward Jenner
c. Louis Pasteur
d. None of these

21. Mycobacterium lepree was discovered by

a. Robert Koch
b. Hansen
c. Edward Jenner
d. Louis Pasteur

22. Streptococcus pneumoniae was isolated by

a. Robert Koch
b. Edward Jenner
c. Antony von Leewenhock
d. Louis Pasteur

23. B.anthracis was isolated by

a. Louis Pasteur
b. Robert Koch
c. Antonyvon Leewenhok
d. None of these

24. Staphylococcus aureus was isolated by

a. Rosenbach
b. Louis Pasteur
c. Passet
d. Sir Alexander Ogston

25. Pseudomonas aeruginosa was first named

a. Schroeter and Gessard
b. Robert Koch
c. Louis Pasteur
d. Edward Jenner

26. T. pallidum was discovered by

a. Robert Koch
b. Schaudinn and Hoffman
c. Louis Pasteur
d. Edward Jenner

27. Neisseria gonorrhoeae was first described by

a. Neisser in 1879
b. Pasteur in 1878
c. Robert Koch
d. None of these

28. Rh factor of the blood was discovered by scientist

a. Louis Pasteur
b. Landsteiner and Weiner
c. Janskey
d. Moss
e. None of these

29. Trepanema pallidum was discovered by

a. Schaudinn and Hoffman
b. Louis Pasteur
c. Burgey
d. Laennec
e. None of these

30. Fluroscent substance used in fluorescent microscopy are

a. Quinine sulphate
b. Auramine
c. All of these
d. None of these

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