Explain briefly:
Yeast is used in bakeries and breweries.
Yeast:
Comment on the following :
(a) Denitrifying bacteria are a blessing as well as a curse to farmers.
(b) Yeast is used in bakeries and breweries.
Assertion (A): Yeast is used in bakeries to make bread and cakes. Reason (R): Yeast are added to the dough to produce carbon dioxide which makes the dough rise by fermentation process.