LIFE SCIENCE

OBJECTIVE LIFE SCIENCE

BIOTECHNOLOGY

Question [CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
In bread making, what microorganism eats the sugar in bread dough which gives off carbon dioxide gas and alcohol?
A
Virus
B
Bacteria
C
Amoeba
D
Yeast
Explanation: 

Detailed explanation-1: -Yeast feeds on the sugar contained with the dough, producing carbon dioxide and alcohol, in a process called fermentation.

Detailed explanation-2: -Alcoholic fermentation requires the electrons from NADH and results in the generation of NAD+. Yeast in bread dough also uses alcoholic fermentation for energy and produces carbon dioxide gas as a waste product. The carbon dioxide that is released causes bubbles in the dough and explains why the dough rises.

Detailed explanation-3: -The gas released during the preparation of bread is carbon dioxide. Fermentation in baking is a process where yeasted dough rises, developing volume and flavor. It occurs when yeast converts sugars present in flour into carbon dioxide and ethyl alcohol.

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