Which microorganism is used for the production of ethanol from malted cereals and fruit juices?

Ethyl alcohol is commercially manufactured from

Rennin used in the cheese industry is

Yeast is an important source of

Which of the following pairs is mismatched?

Read the sentence with two blanks ($a$ and $b$): "The medicine used for patients of .....$(a)$..... is obtained from the species of organism .....$(b)$.....". Which is the correct option for the two blanks?