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- Question
Heat-labile class of immunoglobulins include
Options- A. IgA
- B. IgE
- C. IgG
- D. IgM
- Correct Answer
- IgE
- 1. Which of the following statement is not true about composition of biogas?
Options- A. It is composed almost exclusively of methane and carbon dioxide
- B. It also contains with traces of H2S, N2, H2and CO
- C. It also contains with traces of O2 and Cl2
- D. Both (a) and (b) Discuss
- 2. The phospholipids present in cytoplasm membrane of eubacteria is mainly
Options- A. phosphoglycerides
- B. polyisoprenoid
- C. phospholipoprotein
- D. none of these Discuss
- 3. Which of the following species of Clostridium is responsible for formation of dark green to black colours in cheese?
Options- A. Clostridium tyrobutyricum
- B. Clostridium sporogenes
- C. Clostridium herbarum
- D. None of these Discuss
- 4. Incorporation of atmospheric N2to NH4+ occurs via the process of
Options- A. assimilatory nitrate reduction
- B. transamination
- C. deamination
- D. nitrogen fixation Discuss
- 5. The red or pink color of the fish is generally caused from the growth of
Options- A. Sarcina
- B. Micrococcus or Bacillus species
- C. Molds or yeasts
- D. all of these Discuss
- 6. All organisms require at least small amounts of carbondioxide, However, some can use CO2 as their sole source of carbon. Such organisms are termed as
Options- A. autotrophs
- B. phototrophs
- C. chemotrophs
- D. photo-organotrophs Discuss
- 7. Which of the following bacteria dies quickly after drying?
Options- A. Treponema pallidium
- B. Mycobacterium tuberculosis
- C. Staphylococcus aureus
- D. Pseudomonas aeruginosa Discuss
- 8. In the process of freeze drying, a dense cell suspension is placed in small vials and is frozen at
Options- A. -60 to -78°C
- B. -20 to -30°C
- C. -30 to -48°C
- D. -48 to -58°C Discuss
- 9. Which of the following methods is most likely to be quantitative?
Options- A. Dilution and plating
- B. Gram staining
- C. Wet mount
- D. None of these Discuss
- 10. A culture broth tube was very turbid at the bottom of the tube but clear at the top of the tube indicating that the
Options- A. broth is sterile
- B. organism can tolerate oxygen
- C. organism cannot produce superoxide dismutase and/or catalase
- D. organism should be grown in an anaerobic chamber Discuss
More questions
Correct Answer: It also contains with traces of O2 and Cl2
Correct Answer: phosphoglycerides
Correct Answer: Clostridium herbarum
Correct Answer: nitrogen fixation
Correct Answer: all of these
Correct Answer: autotrophs
Correct Answer: Treponema pallidium
Correct Answer: -60 to -78°C
Correct Answer: Dilution and plating
Correct Answer: organism cannot produce superoxide dismutase and/or catalase
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