Industrially Useful Microbial Processes – Section 2

21. Glucose oxidase, which had been commercially employed to remove glucose from egg white and whole eggs before drying is obtained by submerged aerated fermentation using

A. A. niger
B. B. subtilis
C. B. cereus
D. A.flavus

Correct Answer: A. A. niger

22. Which of the following microorganism can yield vitamin B12 using methanol as a carbon source?

A. Methanobacterium soehngenii
B. Methanobacillus omelianskii
C. Protaminobacter ruber
D. All of the above

Correct Answer: D. All of the above

23. The immediate precursor for glutamic acid production by Corynebacterium glutamicum is

A. lysine
B. oxoacetate
C. citrate
D. 2-oxo-glutarate

Correct Answer: D. 2-oxo-glutarate

24. The method of distillation used to obtain alcohol greater than 95 percent is called

A. fractional distillation
B. flash evaporation
C. azeotropic distillation
D. successive distillation

Correct Answer: C. azeotropic distillation

25. The micro-organism used for industrial production of lactic acid using corn dextrose as media is

A. Lactobacillus bulgaricus
B. Lactobacillus delbrueckii
C. Lactobacillus pentosus
D. Streptococcus lactis

Correct Answer: B. Lactobacillus delbrueckii

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