- A) Mercury lamp
- B) Tungsten metal
- C) Both a and b
- D) None of these
Microbiology MCQ
Total MCQ: 174
MCQ Quiz on Microbiology
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112 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
113 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
114 The electrons passed out from the specimen are called
- A) Primary electrons
- B) Secondary electrons
- C) Tertiary electrons
- D) None of these
115 The most important virulence factors are
- A) Adhesions
- B) Invasiveness
- C) Toxigenicity
- D) Enzymes
116 The term bacteriophage was coined by
- A) De’Herelle
- B) F.W. Twort
- C) Beijernick
- D) Jwanosky
117 Mycorrhiza was first observed by
- A) Funk
- B) Frank
- C) Fisher
- D) Crick
118 The ability of a pathogen to spread in the host tissues after establishing the infection is known as
- A) Adhesion
- B) Invasiveness
- C) Toxigenicity
- D) None of these
119 Father of Medical Microbiology is
- A) Pasteur
- B) Jenner
- C) Koch
- D) A.L. Hock
120 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