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- Question
Which of the following has peptidoglycan as a major constituent of cell wall?
Options- A. Gram-negative bacteria
- B. Gram-positive bacteria
- C. Fungi
- D. None of these
- Correct Answer
- Gram-positive bacteria
- 1. 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
- 2. Lactobacilli constitute the normal flora of
Options- A. prepubertal vagina
- B. adult vagina
- C. post-menopausal vagina
- D. none of these Discuss
- 3. 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
- 4. Which of the following is not true for prokaryotic organism?
Options- A. Nucleus is not bounded by nuclear membrane
- B. Chromosomes does not contain histones
- C. 80S ribosomes are distributed in cytoplasm
- D. Cell wall contains peptidoglycan as one of the major component Discuss
- 5. Which of the following is not employed as an oxidation method?
Options- A. Oxidation ponds
- B. Trickling filters
- C. Contact aerators
- D. All of these Discuss
- 6. Which of the following mutations arise without exposure to external agents?
Options- A. Spontaneous mutations
- B. Analogous mutations
- C. Induced mutations
- D. None of these Discuss
- 7. Which of the following(s) is/are obligate anaeorbes?
Options- A. C septicum
- B. C novyi
- C. C tetani
- D. All of these Discuss
- 8. Fatty acids are oxidized to acetyl-CoA by which of the following pathways?
Options- A. ?-oxidation
- B. Entner-Doudoroff
- C. pentose phosphate pathway
- D. Embden-Meyerhof pathway Discuss
- 9. The energy value of biogas is typically
Options- A. 400-700 BTU/ft3
- B. 1,000 BTU/ft3
- C. 1500 BTU/ft3
- D. more than 5000 BTU/ft3 Discuss
- 10. Too long a fermentation of sauerkraut may favour the growth of
Options- A. Lactobacillus lactis
- B. Lactobacillus brevis
- C. Bacillus subtilis
- D. none of these Discuss
More questions
Correct Answer: both (a) and (b)
Correct Answer: adult vagina
Correct Answer: EI Tor
Correct Answer: 80S ribosomes are distributed in cytoplasm
Correct Answer: All of these
Correct Answer: Spontaneous mutations
Correct Answer: All of these
Correct Answer: ?-oxidation
Correct Answer: 400-700 BTU/ft3
Correct Answer: Lactobacillus brevis
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