Industrially Useful Microbial Processes problems
- 1. The recovery of vitamin from fermentation broth is carried out prior to
Options- A. acidification
- B. alcohol treatment
- C. autolysis
- D. none of these Discuss
Correct Answer: autolysis
- 2. Naringinase, an enzyme commonly used for removal of bitter taste from citrus juice is obtained from
Options- A. A. niger
- B. A.flavus
- C. A. oryzae
- D. S. cerevisiae Discuss
Correct Answer: A. niger
- 3. A major organism used in commercial bioleaching for copper recovery is
Options- A. Desulfovibrio desulfuricans
- B. Pseudomonas aeruginosa
- C. Aspergillus niger
- D. Thiobacillus ferrooxidans Discuss
Correct Answer: Thiobacillus ferrooxidans
- 4. Species of the genus Streptomyces are known for
Options- A. the production of antibiotics
- B. the production of beer
- C. the production of cheese
- D. nitrification Discuss
Correct Answer: the production of antibiotics
- 5. Pectinase, an enzyme used for increasing yield and for clarifying juice is obtained by
Options- A. A. oryzae
- B. A. niger
- C. A.flavus
- D. all of these Discuss
Correct Answer: all of these
- 6. Which of the following microorganism produces only L(+) - lactic acid without further racemization?
Options- A. Leuconostoc mesenteroides
- B. Lactobacillus delbrueckii
- C. Rhizopus oryzae
- D. Lactobacillus bulgaricus Discuss
Correct Answer: Rhizopus oryzae
- 7. Which of the following micro organism utilizes lactose as a carbon source in production of lactic acid from whey media?
Options- A. Lactobacillus bulgaricus
- B. Lactobacillus delbrueckii
- C. Lactobacillus pentosus
- D. Leuconostoc mesenteroides Discuss
Correct Answer: Lactobacillus bulgaricus
- 8. Fungal amylases using stationary culture with wheat bran utilizes
Options- A. A. oryzae
- B. A. niger
- C. A. flavus
- D. S. cerevisiae Discuss
Correct Answer: A. oryzae
- 9. Chlorotetracycline a broad spectrum antibiotic is produced by
Options- A. Streptomyces aureofaciens
- B. Streptomyces rimosus
- C. Streptomyces venezuelae
- D. Streptomyces erythreus Discuss
Correct Answer: Streptomyces aureofaciens
- 10. The production of acetic acid from ethanol is an
Options- A. anaerobic process
- B. aerobic process
- C. a combination of both
- D. none of the above Discuss
Correct Answer: aerobic process
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