Discussion
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- Question
A major organic acid produced by a microbial process used in foods is
Options- A. sulfuric acid
- B. citric acid
- C. oxalic acid
- D. uric acid
- Correct Answer
- citric acid
- 1. Alcohol production from starch and raw sugar utilizes selected strains of
Options- A. Saccharomyces cerevisiae
- B. Candida pseudotropicalis
- C. Candida utilis
- D. none of these Discuss
- 2. Which of the following is not an industrial product made by the fungus Aspergillus niger?
Options- A. Galactosidase
- B. Citric acid
- C. Gluconic acid
- D. Lysine Discuss
- 3. ?-carotene is also known as
Options- A. vitamin A
- B. provitamin A
- C. vitamin C
- D. vitamin D Discuss
- 4. It is mandatory that cultures and fermentation residues be sterilized before discard in case of Eremothecium ashbyii and Ashbya gossypii because they are
Options- A. plant pathogens
- B. human pathogens
- C. plant mutants
- D. none of these Discuss
- 5. The submerged fermentation of vinegar utilizes special fermentor designs known as
Options- A. acetator
- B. cavitator
- C. packed vinegar generator
- D. both (a) and (b) Discuss
- 6. Penicillin G is also known as
Options- A. hydroxy benzyl penicillin
- B. phenoxy methyl penicillin
- C. benzyl penicillin
- D. 2-pentenyl penicillin Discuss
- 7. Why high concentration of sugars are not employed in the fermentation medium?
Options- A. Calcium lactate is not produced
- B. Calcium lactate crystallizes from the medium and slows down the process of fermentation
- C. High sugar concentration itself crystallizes
- D. None of the above Discuss
- 8. Which of the following when used in proper concentration stimulates the Ascomycetes fermentation of vitamin B12 and can be used to counteract toxicity of iron in Candida species?
Options- A. Co
- B. Ni
- C. Zn
- D. Ca Discuss
- 9. Which of the following are true for the heterofermentative microorganism producing lactic acid?
Options- A. Only trace amounts of end products other than lactic acid
- B. Some lactic acid with carbon dioxide, ethyl alcohol, acetic acid and trace amount of few other products
- C. They are used for commercial lactic acid production
- D. None of the above Discuss
- 10. B. flavum strain can be used for the production of
Options- A. L-Threonine
- B. L-Proline
- C. L-Isoleucine and L-Histidine
- D. All of the above Discuss
Industrially Useful Microbial Processes problems
Search Results
Correct Answer: Saccharomyces cerevisiae
Correct Answer: Lysine
Correct Answer: provitamin A
Correct Answer: plant pathogens
Correct Answer: both (a) and (b)
Correct Answer: benzyl penicillin
Correct Answer: Calcium lactate crystallizes from the medium and slows down the process of fermentation
Correct Answer: Co
Correct Answer: Some lactic acid with carbon dioxide, ethyl alcohol, acetic acid and trace amount of few other products
Correct Answer: All of the above
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