Discussion
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- Question
Penicillin is produced by
Options- A. aerobic fermentation
- B. anaerobic fermentation
- C. aerobic fermentation followed by anaerobic fermentation
- D. anaerobic fermentation followed by aerobic fermentation
- Correct Answer
- aerobic fermentation
- 1. Media used for the production of chlorotetracyclin consists of
Options- A. sugar, corn steep liquor, CaCO3, (NH4)2SO4 and NH4 Cl
- B. corn steep liquor, CaCO3 and (NH4)2SO4
- C. sugar, CaCO3 and (NH4)2SO4
- D. corn steep liquor, CaCO3, (NH4)2SO4 and NH4 Cl Discuss
- 2. pH of the fermentation medium for chlorotetracyclins is
Options- A. 5-6
- B. 6-7
- C. 7-8
- D. 8-9 Discuss
- 3. During which phase of growth of Penicillium chrysogenum maximum antibiotic production takes place
Options- A. during the first phase
- B. during the second phase
- C. during the third phase
- D. same in all the phases Discuss
- 4. Chlorotetracyclin is soluble in
Options- A. organic solvents
- B. water
- C. ether
- D. all of these Discuss
- 5. The yield of the antibiotic depends upon
Options- A. pH of the medium
- B. age of the inoculum
- C. composition of the medium
- D. all of these Discuss
- 6. Penicillin is recovered after fermentation as
Options- A. potassium penicillin
- B. calcium penicillin
- C. sodium penicillin
- D. penicillin only Discuss
- 7. Streptomycin is produced by
Options- A. S. griseus
- B. S. griseoflavus
- C. S. aerofaciens
- D. S. ramosus Discuss
- 8. Which of the following organism(s) produce(s) tetracycline?
Options- A. Steptomyces aureofaciens
- B. Steptomyces ramosus
- C. Nocardia sulphurea
- D. All of these Discuss
- 9. Which of the following changes occur during first phase of growth of Penicillium chrysogenum?
Options- A. Growth of mycelia occurs
- B. Ammonia is liberated in the medium
- C. Lactic acid present in the corn steep liquor is utilized at the maximum rate
- D. All of the above Discuss
- 10. At acidic pH, penicillin remains in
Options- A. aqueous phase
- B. solvent phase
- C. both (a) and (b)
- D. precipitates Discuss
Antibiotics problems
Search Results
Correct Answer: sugar, corn steep liquor, CaCO3, (NH4)2SO4 and NH4 Cl
Correct Answer: 5-6
Correct Answer: during the second phase
Correct Answer: water
Correct Answer: all of these
Correct Answer: potassium penicillin
Correct Answer: S. griseus
Correct Answer: All of these
Correct Answer: All of the above
Correct Answer: solvent phase
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