How is yeast used in making bread?

Answer 1

Yeast, as it says on the package, is a living thing. So it has a certain amount of metabolism going on. It is going to take in some form of food, process it, and end up with some energy it can use for reproduction etc. and some by products. The food it takes in consists, initially, of flour (if you're making bread), Grape Juice (wine), or grains (beer, Jack Daniels). They break down and the yeast actually work on simpler sugars, and the chemical process is as follows, glucose (sugar) yields ethanol (what you want if your making booze) and Carbon Dioxide (what you want if you're making bread).

C6H12O6 (Glucose, sugar) yields 2 C2H5OH (Ethanol) + 2 CO2

Answer 2

While during the process of fermentation, yeasts are added to the bread to make it soft and stable to eat.

Answer 3

It is added to the dough and then is being let to cool down for several hours. Then the dough 'opens' and so the bread is ready to bake.

Answer 4

Na2+OOH+N2B12