Discussion
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- Question
The organism that starts out as amoeboid, phagocytic cells and converts to a sluglike pseudoplasmodium that migrates prior to development of a sorocarp belongs to which division?
Options- A. Ascomycota
- B. Chytridiomycota
- C. Myxomycota
- D. Oomycota
- Correct Answer
- Myxomycota
- 1. Gram-negative bacteria, responsible for food poisoning, is/are
Options- A. Salmonella
- B. Pseudomonas
- C. Clostridia
- D. None of these Discuss
- 2. Most strains of Staphylococcus aureus indicate
Options- A. phosphatase production
- B. a golden-yellow pigment
- C. ?-haemolysis on sheep blood agar
- D. all of the above Discuss
- 3. An enrichment medium for the isolation of Shigella is
Options- A. Alkaline peptone water
- B. Terathionate broth
- C. Selenite F broth
- D. none of these Discuss
- 4. The bacteria, which is more resistant to adverse environmental conditions, is
Options- A. S sonnei
- B. S dysenteriae
- C. S flexneri
- D. S boydii Discuss
- 5. Icosahedral viruses are generally
Options- A. polio viruses
- B. adeno viruses
- C. both (a) and (b)
- D. none of these Discuss
- 6. The efficiency of amplification in PCR in later cycles is reduced due to
Options- A. reduction in substrate concentration
- B. insufficient enzyme and time to synthesize mass quantity of DNA
- C. build up of PCR product which competes with primers for hybrid formation
- D. all of these Discuss
- 7. The commonest species of Bacteroides in fragilis group, which causes human infection, is
Options- A. B vulgatus
- B. B fragilis
- C. B ovatus
- D. B merdae Discuss
- 8. Nitrogen fixation
Options- A. changes the free nitrogen (N2) to a form usable by plants
- B. especially changes nitrogen compounds, mostly amines such as NH2
- C. both (a) and (b)
- D. fix the free nitrogen (N2) by which it should not be usable by plants Discuss
- 9. Lactobacilli constitute the normal flora of
Options- A. prepubertal vagina
- B. adult vagina
- C. post-menopausal vagina
- D. none of these Discuss
- 10. Which of the following biotypes of Vibrio cholerae are prevalent in India?
Options- A. EI Tor
- B. Classical
- C. Both (a) and (b)
- D. None of these Discuss
More questions
Correct Answer: Salmonella
Correct Answer: all of the above
Correct Answer: Selenite F broth
Correct Answer: S sonnei
Correct Answer: both (a) and (b)
Correct Answer: all of these
Correct Answer: B fragilis
Correct Answer: both (a) and (b)
Correct Answer: adult vagina
Correct Answer: EI Tor
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