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- Question
Which disinfectant was the most effective against Salmonella"?
Options- A. Phenol
- B. Cetylpyridinium chloride
- C. Hexachlorophene
- D. Merthiolate
- Correct Answer
- Merthiolate
- 1. The influenza vaccine is administered each year because
Options- A. mutations in the viral hemagglutinin may allow the virus to evade the immune response elicited by previous vaccines
- B. it is a polysaccharide vaccine that does not confer long-term protection
- C. the vaccine is sufficiently toxic to make it necessary to administer only a small amount at any one time
- D. none of the above Discuss
- 2. Which of the following is the commonest species of Salmonella for causing zoonotic disease?
Options- A. S Indiana
- B. S newport
- C. S typhimurium
- D. S enteritidis Discuss
- 3. The archaebacterium Halobacterium, an extreme halophile, and Sulfolobus, a thermoacidophile, can be cultured in the presence of antibiotics such as streptomycin and chloramphenicol because
Options- A. they contain ether-linked isoprenoids in their plasma membrane
- B. they lack murein in their cell wall
- C. they contain 80S, as opposed to 70S, ribosomes
- D. all of the above Discuss
- 4. The organisms that can be acid-fast stained is
Options- A. Nocardia
- B. Tubercle bacilli
- C. Lepra bacilli
- D. all of these Discuss
- 5. Recombination of virus genomes occurs
Options- A. by transduction
- B. by transription
- C. simultaneous infection of a host cell by two viruses with homologous chromosomes
- D. by transformation Discuss
- 6. Quellung reaction is used for typing of
Options- A. Klebsiella pneumoniae
- B. Streptococcus pneumoniae
- C. Both (a) and (b)
- D. None of these Discuss
- 7. Which of the following does not kill endospores?
Options- A. Autoclave
- B. Incineration
- C. Hot air sterilization
- D. Pasteurization Discuss
- 8. The magnitude of BOD of wastewater is related to
Options- A. bacterial count
- B. amount of organic material
- C. amount of inorganic material
- D. all of the above Discuss
- 9. What is Mycology?
Options- A. Study of viruses
- B. Study of nucleic acid
- C. Study of bacteria
- D. Study of fungi Discuss
- 10. Which is not a function of IgG?
Options- A. Major antibody in serum
- B. First antibody type produced against an antigen during the primary antibody response
- C. Activates or fixes complement
- D. Involved in opsonization Discuss
More questions
Correct Answer: mutations in the viral hemagglutinin may allow the virus to evade the immune response elicited by previous vaccines
Correct Answer: S typhimurium
Correct Answer: they lack murein in their cell wall
Correct Answer: all of these
Correct Answer: simultaneous infection of a host cell by two viruses with homologous chromosomes
Correct Answer: Both (a) and (b)
Correct Answer: Pasteurization
Correct Answer: amount of organic material
Correct Answer: Study of fungi
Correct Answer: First antibody type produced against an antigen during the primary antibody response
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