A) Rhizopus stolonifer
B) Caedobacter taeniospiralls
C) Bacillus subtilis
D) Saccharomyces cerevisae
Correct Answer: D
Solution :
The yeast cells secrete enzymes on the substratum. These enzymes are collectively called zymase. In the absence or poor supply (scarcity) of oxygen the yeast plants multiply slowly, the major portion of sugar is converted into carbon dioxide and ethyl alcohol within the cytoplasm. \[{{C}_{6}}{{H}_{12}}{{O}_{6}}+\] yeast \[\to {{C}_{2}}{{H}_{5}}OH+C{{O}_{2}}+\] energy This process is called alcoholic fermentation. It is utilized in production of industrial alcohol in wine making, in brewing and in bread making. Rhizopus stolonifer is employed in the prepration of fumaric acid.
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