Example of using yeast to make bread, because Yeast is an organism, and organisms are part of biology and Yeast is something that can be grown and used to help people meet their need for food.
The invention of the fed-batch technology for production of bakers' yeast has been a cornerstone of modern biotechnology, enabling the development of efficient production processes for antibiotics, biopharmaceuticals and technical enzymes.
Yeast has two primary functions in fermentation firstly To convert sugar into carbon dioxide gas, which lifts and aerates the dough. secondly To mellow and condition the gluten of the dough so that it will absorb the increasing gases evenly and hold them at the same time. Also in bread making the enzyme, amylase, is used to break down flour into soluble sugars, which are transformed by yeast into alcohol and carbon dioxide.
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