- A) Exaltation
- B) Attenuation
- C) Both a and b
- D) None of these
Microbiology MCQ
Total MCQ:
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MCQ Quiz on Microbiology
92 The magnification power of the electron microscope developed by Knoll and Ruska is
- A) 10,000x
- B) 12,000x
- C) 15,000x
- D) 20,000x
93 The virulence of a pathogen is usually measured by
- A) LD
- B) MLD
- C) ID
- D) All of the above
94 L-forms are discovered by
- A) Klein Berger
- B) Louis Pasteur
- C) Robert Koch
- D) Antony von Leeuwenhoek
95 In an electron microscope, the source of electrons is from
- A) Mercury lamp
- B) Tungsten metal
- C) Both a and b
- D) None of these
96 The lethal dose required to kill 50% of the lab animals tested under standard conditions is called
- A) ID
- B) LD50
- C) ID50
- D) MLD
97 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
98 The electrons passed out from the specimen are called
- A) Primary electrons
- B) Secondary electrons
- C) Tertiary electrons
- D) None of these
99 The most important virulence factors are
- A) Adhesions
- B) Invasiveness
- C) Toxigenicity
- D) Enzymes
100 The term bacteriophage was coined by
- A) De’Herelle
- B) F.W. Twort
- C) Beijernick
- D) Jwanosky