From which organism is streptokinase obtained?

Which industrial products are synthesized from microbes?
$I.$ Antibiotics
$II.$ Fermented beverages
$III.$ Bioactive molecules
$IV.$ Enzymes
Choose the correct option.

Match the following columns:

List-$I$	List-$II$
$(a)$ Aspergillus niger	$(1)$ Lactic acid
$(b)$ Acetobacter aceti	$(2)$ Butyric acid
$(c)$ Clostridium butylicum	$(3)$ Acetic acid
$(d)$ Lactobacillus	$(4)$ Citric acid

Which enzyme is useful for removing oily stains in laundry?

Brewer's yeast is used for . . . . . . $A$ . . . . . . of malted cereals and fruit juices to produce . . . . . . $B$ . . . . . . .

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