discuss one commercial use of yeast and explain what molecules are involved?

Question

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Answer 1

One can brew beer or bake bread or cakes. Yeast acts on the sugar in fermenting beer to produce carbon dioxide and ethanol. The CO2 makes the bubbles. The ethyl alcohol produces the high when you drink it. In bread and cake, the carbon dioxide evolves in the midst of the baking dough. It causes the dough to "rise," which means that it produces all the "little holes" in the bread and cake that make them seem so "light."