Industrially Useful Microbial Processes
Which of the following micro organism utilizes lactose as a carbon source in production of lactic acid from whey media?

Leuconostoc mesenteroides
Lactobacillus pentosus
Lactobacillus bulgaricus
Lactobacillus delbrueckii

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Industrially Useful Microbial Processes
The early assay employed for measuring penicillin activity were based upon the quantity required to prevent growth of S. aureus over

20 mm diameter zone using the cylinder plate method of assay
24 mm diameter zone using the cylinder plate method of assay
200 mm diameter zone using the cylinder plate method of assay
None of these

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