Discussion
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- Question
The commonly used media for submerged bacterial fermentation at commercial scale is
Options- A. beet molasses
- B. liver extract
- C. germinated seed
- D. none of these
- Correct Answer
- beet molasses
- 1. Which of the following was the first amino acid to be produced commercially?
Options- A. L-glutamic acid
- B. L-lysine
- C. L-cystine
- D. L-methionine Discuss
- 2. Which species from the followings is resistant to methyl tryptophan?
Options- A. Candida utilis
- B. E. coli
- C. B. subtilis
- D. Hansenula anomala Discuss
- 3. Most productive species among the different vitamin B12 producing Pseudomonads is
Options- A. P. denitrificans
- B. P. ovalis
- C. P. aureofaciens
- D. none of these Discuss
- 4. Which of the following substance is employed to neutralize the lactic acid as it is produced (because lactic acid bacteria do not tolerate high concentrations of acid?
Options- A. CaCO3
- B. (NH4)2 HPO4
- C. MgSO4
- D. Na2SO4 Discuss
- 5. The enzyme which converts optically active isomers of lactic acid to the optically inactive racemic mixture is
Options- A. isomerase
- B. racemase
- C. dehydrogenase
- D. invertase Discuss
- 6. Rickes et al. recovered active crystalline vitamin B12 from the culture of
Options- A. Streptomyces griseus
- B. Bacillus megaterium
- C. Streptomyces olivaceus
- D. Streptomyces lactis Discuss
- 7. Protease, which is used for flavouring of sake and haze removal in sake is produced by
Options- A. A. oryzae
- B. A. flavus
- C. B. cereus
- D. A. niger Discuss
- 8. 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
- 9. 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
- 10. 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
Industrially Useful Microbial Processes problems
Search Results
Correct Answer: L-lysine
Correct Answer: B. subtilis
Correct Answer: P. denitrificans
Correct Answer: CaCO3
Correct Answer: racemase
Correct Answer: Streptomyces griseus
Correct Answer: A. oryzae
Correct Answer: autolysis
Correct Answer: A. niger
Correct Answer: Thiobacillus ferrooxidans
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