What is the function of $Streptokinase$?

Which of the following participates in the manufacturing of dextrans?

Which of the following plays an important role in the process of fermentation?

Which organism is useful for producing a chemical that inhibits immunity during organ transplantation?

The microorganism grown on molasses and sold as a food flavoring substance is:

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?