From which of the following is streptokinase obtained?

Yeast is used in the production of $......$.

Which steroid is useful for transformation?

Which of the following is correct regarding amino acids produced by microbes?

How many of the following microorganisms are bacteria?
Aspergillus niger,Acetobacter aceti,Clostridium butylicum,Lactobacillus,Brewer's yeast,Baker's yeast,Propionibacterium shermanii,Penicillium notatum

Which bacterium is used to produce Swiss cheese?