Antibiotics are produced by

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

Identify the correct statements w.r.t. antibiotics

$(i)$ Fleming, Chain and Florey were awarded the Nobel prize in $1945$
$(ii)$ Antibiotics have greatly improved our capacity to treat deadly diseases
$(iii)$ Penicillin was used to treat American soldiers wounded in World War I

An immunosuppressive agent used in organ-transplant patients is

Yeast have been used for the commercialproduction of

$I.$ ethanol                 $II.$ bread

$III.$ Toddy drink         $IV.$ Biogas

Choose the correct option

Identify the blank spaces $a, b, c$ and $d$ given inthe following table and select the correct answer.