Name an immune immunosuppressive agent.

_________ are produced by yeast and act by competitively inhibiting the enzyme responsible for synthesis of cholesterol.

Conversion of sugar into alcohol during fermentation is due to the direct action of

Citric acid is produced by

Fill up the blanks.

$(I)$ Ethanol is produced by $…a…$

$(II)$ Large scale production of beverages inindustries is done in very large vesselscalled $ …b…$

$(III)$ Penicillin is discovered by $…C…$

$(IV)$ LAB checks disease causing microbes in $…d…$ $a$ to $d$ in the above statements refers to