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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
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
23. The immediate precursor for glutamic acid production by Corynebacterium glutamicum is
A. lysine
B. oxoacetate
C. citrate
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
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
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