Discussion
Home ‣ Microbiology ‣ Antimicrobial Chemotherapeutic Agents See What Others Are Saying!
- Question
Which of the antibiotic is not used as a food preservative?
Options- A. Pimaricin
- B. Nisin
- C. Tylosin
- D. ?-lactam antibiotic
- Correct Answer
- ?-lactam antibiotic
- 1. Many enzymes consists of a protein combined with low molecular weight organic molecule called as
Options- A. apoenzyme
- B. co-enzyme
- C. holoenzyme
- D. co-factors Discuss
- 2. Which of the following is the necessary step for cultivating the microorganisms?
Options- A. Preparing a culture medium for the growth of microorganisms
- B. Sterilizing in order to eliminate all living microorganisms in vessel
- C. Inoculating the microorganisms in the prepared medium
- D. All of the above Discuss
- 3. A culture broth tube was very turbid at the surface but clear throughout the rest of the tube indicating that the
Options- A. organism are aerobes
- B. organism should be grown in an anaerobic chamber
- C. organism cannot produce superoxide dismutase and/or catalase
- D. organism cannot tolerate oxygen Discuss
- 4. The medium which allows the growth of more than one microorganisms of interest but with morphologically distinguishable colonies is known as
Options- A. selective medium
- B. enrichment medium
- C. differential medium
- D. none of these Discuss
- 5. Lens antigens of the eye are
Options- A. cross-reacting antigens
- B. sequestrated antigens
- C. neoantigens
- D. none of these Discuss
- 6. The cells most oftenly infected by HIV are
Options- A. Null cells
- B. CD8 + T lymphocytes
- C. CD4 + T lymphocytes
- D. None of these Discuss
- 7. The ability of CTP to bind to aspartate carbamoyltransferase and shut down the synthesis of more CTP is an example of
Options- A. enzyme induction
- B. enzyme repression
- C. feedback inhibition of enzyme activity
- D. none of these Discuss
- 8. Organisms can synthesize ATP by oxidative phosphorylation when they
Options- A. ferment
- B. oxidize glucose to pyruvate
- C. pass electrons from the oxidation of chlorophyll through an electron transport system
- D. pass electrons to oxygen through an electron transport system containing cytochromes Discuss
- 9. Which of the following hint(s) suggest/s that a given specimen is likely to contain anaerobic bacteria?
Options- A. Gas in specimen
- B. Foul odour
- C. Presence of sulphur granules
- D. All of these Discuss
- 10. Trickling filter comes under
Options- A. primary treatment
- B. secondary treatment
- C. tertiary treatment
- D. none of these Discuss
More questions
Correct Answer: co-enzyme
Correct Answer: All of the above
Correct Answer: organism are aerobes
Correct Answer: differential medium
Correct Answer: sequestrated antigens
Correct Answer: CD4 + T lymphocytes
Correct Answer: feedback inhibition of enzyme activity
Correct Answer: pass electrons to oxygen through an electron transport system containing cytochromes
Correct Answer: All of these
Correct Answer: secondary treatment
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