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- Question
The number of members of the division Phaeophyta that live in freshwater habitats
Options- A. is greater than the number of members of the division Chloro-phyta that live in freshwater habitats
- B. is lesser than the number of members of the division Chlorophyta that live in freshwater habitats
- C. is equal to the number of members of the division Chlorophyta that live in freshwater habitats
- D. none of the above
- Correct Answer
- is lesser than the number of members of the division Chlorophyta that live in freshwater habitats
- 1. Most spoilage bacteria grow at
Options- A. acidic pH
- B. alkaline pH
- C. neutral pH
- D. any of the pH Discuss
- 2. Which of the following repairs nicked DNA by forming a phosphodiester bond between adjacent nucleotides?
Options- A. Helicase
- B. DNA gyrase
- C. Topoisomerases
- D. DNA ligase Discuss
- 3. Pseudomonas syncyanea produces a
Options- A. bluish gray to brownish color in milk in its pure form
- B. brownish color to bluish gray in milk in its pure form
- C. gray to brownish color in milk
- D. yellow color in milk Discuss
- 4. The test (s) based on the principle of toxin neutralization is/are
Options- A. Nagler's reaction
- B. Schick test
- C. both (a) and (b)
- D. none of these Discuss
- 5. Bacillus thuringiensis is useful as a bacterial
Options- A. source of antibiotics
- B. producer of vitamins
- C. herbicide
- D. pesticide Discuss
- 6. Gassy spoilage of green olives is usually caused by
Options- A. Enterobacter spp
- B. Bacillus spp
- C. Clostridium spp
- D. all of these Discuss
- 7. Which of the following species of different genera of bacteria are not capable of transforming nitrate to nitrogen?
Options- A. Achromobacter
- B. Agrobacterium
- C. Alcaligenes
- D. None of these Discuss
- 8. Denitrification may be distinguished as
Options- A. dissimilative
- B. assimilative
- C. both (a) and (b)
- D. blue baby syndrome Discuss
- 9. Iodophores are mixture of
Options- A. iodine and aldehydes
- B. iodine and surface active agents
- C. iodine and alcohols
- D. iodine and phenols Discuss
- 10. The predominant kind of bacteria causing spoilage in fish at chilling temperature is
Options- A. species of Pseudomonas
- B. Micrococcus
- C. Bacillus
- D. none of these Discuss
More questions
Correct Answer: neutral pH
Correct Answer: DNA ligase
Correct Answer: bluish gray to brownish color in milk in its pure form
Correct Answer: both (a) and (b)
Correct Answer: pesticide
Correct Answer: all of these
Correct Answer: None of these
Correct Answer: both (a) and (b)
Correct Answer: iodine and surface active agents
Correct Answer: species of Pseudomonas
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