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- Question
Which of the following(s) is/are porteolytic or putrefactive decomposing proteins with the production of malodorous compounds such as H2S, mercaptans, ammonia, indole and skatole?
Options- A. C. sporogenes
- B. C. putrifaciens
- C. both (a) and (b)
- D. C. butyricum
- Correct Answer
- both (a) and (b)
- 1. The time required to kill 90% of the microorganisms in a sample at a specific temperature is the
Options- A. decimal reduction time
- B. thermal death point
- C. F value
- D. D value Discuss
- 2. Which of the following theory of antibody production is most widely accepted?
Options- A. Side chain theory
- B. Clonal selection theory
- C. Direct template theory
- D. Indirect template theory Discuss
- 3. Entner-Doudoroff pathway is found in
Options- A. aerobic prokaryotes
- B. anaerobic prokaryotes
- C. both (a) and (b)
- D. aerobic eukaryotes Discuss
- 4. Water activity can act as
Options- A. an intrinsic factor determining the likelihood of microbial proliferation
- B. a processing factor
- C. an extrinsic factor
- D. all of the above Discuss
- 5. Pink rots in eggs is caused by the strains of
Options- A. Pseudomonas
- B. Pseudomonas fluorescens
- C. species of Micrococcus or Bacillus
- D. none of the above Discuss
- 6. Which of the following viruses belong/s to family caliciviridae?
Options- A. Hepatitis B virus
- B. Hepatitis D virus
- C. Hepatitis E virus
- D. All of these Discuss
- 7. The time from infection until lysis is called as
Options- A. eclipse period
- B. rise period
- C. latent period
- D. burst size Discuss
- 8. Ethylene oxide is used to destroy or kill which of the following microbes?
Options- A. Bacteria
- B. Spores
- C. Fungi
- D. All of these Discuss
- 9. Bacteriophages have been used widely in genetic research, since they are the smallest and simplest biological entities capable of
Options- A. self-replication
- B. duplication
- C. self-duplication
- D. multiplication Discuss
- 10. Thiobacillus thiooxidans has an optimum pH of
Options- A. 2.0-3.5
- B. 0.5-6.0
- C. 6.5-7.5
- D. 9.0-9.5 Discuss
More questions
Correct Answer: D value
Correct Answer: Clonal selection theory
Correct Answer: both (a) and (b)
Correct Answer: all of the above
Correct Answer: Pseudomonas
Correct Answer: Hepatitis E virus
Correct Answer: latent period
Correct Answer: All of these
Correct Answer: self-replication
Correct Answer: 2.0-3.5
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