1. 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?
2. Pectinase, an enzyme used for increasing yield and for clarifying juice is obtained by
3. The 95% ethanol is equivalent to
4. Which species from the followings is resistant to methyl tryptophan?
5. 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?
6. Alcohol production from starch and raw sugar utilizes selected strains of
7. Fungal amylases using stationary culture with wheat bran utilizes
8. Why high concentration of sugars are not employed in the fermentation medium?
9. Which of the following organism produces enzyme taka diastase?
10. Which of the following is not an industrial product made by the fungus Aspergillus niger?
11. The biotin level in obtaining L-gluatmic acid by fermentation using Micrococcus glutamicus is critical because
12. Most productive species among the different vitamin B12 producing Pseudomonads is
13. The enzyme which converts optically active isomers of lactic acid to the optically inactive racemic mixture is
14. The sugar concentration of molasses used in fermentation should be
15. Bacitracin, an antibiotic similar to penicillin, is produced by
16. Which of the following Ascomycetes are used for riboflavin production?
17. B. flavum strain can be used for the production of
18. A major organism used in commercial bioleaching for copper recovery is
19. During fermentation, pyruvic acid is converted into organic products such as
20. Which of the following are true for the heterofermentative microorganism producing lactic acid?
21. The submerged fermentation of vinegar utilizes special fermentor designs known as
22. The major organism used in the microbial production of citric acid is
23. Which of the following organism is utilized for the production of D-L-alanine?
24. The aerated submerged bacterial fermentation to produce vitamin B12 employs strains of
25. Which of the following is a heterofermentative micro-organism?