1) Find three other chemicals that can be produced from fermentation besides
ethanol. Do these fermentations use yeast or some other organism? What are
the substrates and the products?
2)In this fermentation, glucose is used as the substrate. As a pure sugar, however,
it is rather expensive. List some other substrates that could be used, especially if
they would typically be a byproduct of another process.
3) why yeast might produce ethanol during fermentation if ethanol is
eventually toxic to them.
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