1. Electron microscope gives magnification upto
a. 100 X
b. 2000 X
c. 50,000 X
d. 2,00,000 X
2. Term vaccine was coined by
a. Robert Koch
b. Pasteur
c. Needham
d. None of these
3. The inventor of Microscope is
a. Galileo
b. Antony von
c. Pasteur
d. Koch
4. First Pasteur conducted fermentation experiments in
a. Milk
b. Food material
c. Fruit juices
d. Both a and c
5. Modern concepts of chemotherapy was proposed by
a. Paul Ehrlich
b. Joseph Lister
c. Elie Metchnikoff
d. None of these
6. The role of phagocytosis was discovered by
a. Paul Ehrlich
b. Joseph lister
c. Elie Metchikoff
d. Pasteur
7. L – forms are discovered by
a. Klein Berger
b. Louis Pasteur
c. Robert Koch
d. Antony von Leeuwenhock
8. 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
9. The term bacteriophage was coined by
a. De’Herelle
b. F.W. Twort
c. Beijernick
d. Jwanosky
10. Viral infection of bacteria was discovered by
a. De’Herelle
b. F.W. Twort
c. Beijernick
d. Jwanoksy
11. Eye cannot resolve any image less than
a. 1ìm
b. 2ìm
c. 7ìm
d. 5ìm
12. Compound Microscope was discovered by
a. A.V. Lewenhoek
b. Pasteur
c. Janssen and Hans
d. None of these
13. Electron Microscope was discovered by
a. Prof. Fritz
b. Janssen and Hans
c. Knoll and Ruska
d. None of these
14. Magnification range of light microscope is
a. 1000x – 5000x
b. 1000x – 2000x
c. 500x – 1000x
d. None of these
15. Condensation of light in light Microscope is by
a. Objective
b. Condensor
c. Ocular
d. All of these
16. Light gathering capacity of Microscope is called
a. Numerical aperture
b. Angular aperture
c. Both a and b
d. None of these
17. If 10x and 40x objectives are used (air is the medium), the numerical aperture is
a. 1.5
b. 2.0
c. 1.0
d. 1.8
18. The ability of Microscope to distinguish two objects into two separate objects, is called.
a. Resolving power
b. Wave length
c. N.A.
d. None of these
19. Limit of resolution of compound microscope is
a. 0.018 Ao
b. 0.1 mm
c. 5 ìm
d. 1 mm
20. Source of light in fluorescence microscopy is from
a. Mercury lamp
b. Sunlight
c. Both a and b
d. None of these
21. Who perfected a magnetic lens in 1927
a. Gabor
b. Broglie
c. Busch
d. None of these
22. The magnefication power of electron microscope developed by Knell and Ruska is
a. 10,000x
b. 12,000x
c. 15,000x
d. 20,000x
23. In electron microscope source of electrons is from
a. Mercury lamp
b. Tungsten metal
c. Both a and b
d. None of these
24. The e lectron passed out from the specimen are called
a. Primary electrons
b. Secondary electrons
c. Tertiary electrons
d. None of these
25. Mycorrhiza was first observed by
a. Funk
b. Frank
c. Fisher
d. Crick
Answer Key
- d
- b
- b
- c
- a
- c
- a
- c
- a
- b
- d
- c
- c
- b
- b
- a
- c
- a
- b
- a
- a
- b
- b
- b
- b