Consider the following statements
$I.$ Yeast used in making bread and beverages is a prokaryotic fungus
$II.$ Streptokinase is produced by Streptococcus and modified by genetic engineering is used as a clot buster
$III.$ Lipases are added in detergent for removing only stains from laundry
$IV.$ Pectinases are used in clearing fruit juices
Which of the statement given above are correct?
$I, II, III$ and $IV$
$I, II$ and $III$
$II, III$ and $IV$
$III$ and $IV$
Who first realized the use of yeast in fermentation
Citric acid is produced by
$A$ : After $24\; hours$ toddy becomes unpalatable.
$R$ : Toddy left for a few hours undergoes fermentation.
Write the most important characteristic that Aspergillus niger, Clostridium butylicum and Lactobacillus share.