Discussion
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- Question
Agar is used for solidifying culture media because
Options- A. it does not affect by the growth of bacteria
- B. it does not add to the nutritive properties of the medium
- C. the melting and solidifying points of agar solution are not the same
- D. all of the above
- Correct Answer
- all of the above
- 1. For the selection of lactobacilli present in cheddar cheese, the pH of the medium is maintained at
Options- A. 6.35
- B. 5.35
- C. 4.35
- D. 5.75 Discuss
- 2. The fruiting body of a mushroom is called
Options- A. sorocarps
- B. basidiocarps
- C. ascocarps
- D. plasmodiocarps Discuss
- 3. The bacteriochlorophylls used by the anoxygenic bacteria have absorbance maxima located in the_____portion(s) of the spectrum.
Options- A. green
- B. blue
- C. ultraviolet
- D. infrared Discuss
- 4. Which of the following infection(s) can be diagnosed by the use of polymerase chain reaction?
Options- A. HIV-1 and HIV-2 viruses
- B. Hepatitis B virus
- C. Mycobacterium tuberculosis
- D. All of these Discuss
- 5. In storage atmospheres of high humidity variety of molds may cause
Options- A. superficial fungal spoilage
- B. bacterial spoilage
- C. both (a) and (b)
- D. none of these Discuss
- 6. The bacteria that is negative for fermentation of mannitol is
Options- A. S flexneri
- B. S boydii
- C. S dysenteriae
- D. S sonnei Discuss
- 7. Species of Shigella which is predominant in India is
Options- A. S sonnei
- B. S dysenteriae
- C. S boydii
- D. S flexneri Discuss
- 8. Which of these mechanisms for thymine dimers repair lead to mutations?
Options- A. Excision repair
- B. Photoreactivation
- C. SOS repair
- D. Never leads to mutation Discuss
- 9. Food poisoning strains of Clostridium perfringens belong to
Options- A. type A
- B. type B
- C. type C
- D. type D Discuss
- 10. The test(s) used for the assay of cholera toxin is/are
Options- A. Radioimmunoassay
- B. Enzyme-linked immunosorbent assay
- C. Morphological changes in Chinese hamster ovary cells
- D. All of the above Discuss
More questions
Correct Answer: 5.35
Correct Answer: basidiocarps
Correct Answer: infrared
Correct Answer: All of these
Correct Answer: superficial fungal spoilage
Correct Answer: S dysenteriae
Correct Answer: S flexneri
Correct Answer: SOS repair
Correct Answer: type A
Correct Answer: All of the above
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