Industrially Useful Microbial Processes problems
- 1. Vinegar is a fermentation derived food product containing not less than
Options- A. 4% acetic acid
- B. 15% acetic acid
- C. 25% acetic acid
- D. 6% acetic acid Discuss
Correct Answer: 4% acetic acid
- 2. Which of the following Ascomycetes are used for riboflavin production?
Options- A. Eremnothecium ashbyii
- B. Ashbya gossypii
- C. Candida guilliermondia
- D. Both (a) and (b) Discuss
Correct Answer: Both (a) and (b)
- 3. The 95% ethanol is equivalent to
Options- A. 190 proof
- B. 110 proof
- C. 170 proof
- D. 120 proof Discuss
Correct Answer: 190 proof
- 4. Riboflavin is a by-product of __________ fermentation carried out by Clostridium spp.
Options- A. citric acid
- B. acetone butanol
- C. streptomycin
- D. ethanol Discuss
Correct Answer: acetone butanol
- 5. Bacitracin, an antibiotic similar to penicillin, is produced by
Options- A. Bacillus polymyxa
- B. Streptomyces erythreus
- C. Bacillus licheniformis
- D. Aspergillus fumigatus Discuss
Correct Answer: Bacillus licheniformis
- 6. The first penicillin isolated by Alexander Fleming, penicillin F is also called
Options- A. 2-Pentenyl Penicillin
- B. n-heptyl penicillin
- C. phenoxymethyl penicillin
- D. benzyl penicillin Discuss
Correct Answer: 2-Pentenyl Penicillin
- 7. The strain C. glutamicum can be used for the production of
Options- A. L-ornithine
- B. L-phenylalanine
- C. L-glutamine
- D. all of these Discuss
Correct Answer: all of these
- 8. The biotin level in obtaining L-gluatmic acid by fermentation using Micrococcus glutamicus is critical because
Options- A. too low level prevents growths, hence L-glutamic acid production
- B. too high level prevents L-glutamic acid production
- C. both (a) and (b)
- D. none of the above Discuss
Correct Answer: both (a) and (b)
- 9. The rapid process of microbial oxidation developed to produce acetic acid from ethanol at Schutzenbach, Germany is also known as
Options- A. packed generator
- B. trickle method
- C. Orleans process
- D. both (a) and (b) Discuss
Correct Answer: both (a) and (b)
- 10. The Candida species require fermentation equipment lined with plastic because they are extremely sensitive to
Options- A. traces of cobalt
- B. traces of nickel
- C. traces of iron
- D. none of these Discuss
Correct Answer: traces of iron
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