answer 2 In the fermentation process, the yeast produces CO2 which, as bubbles, makes the bread more porous, and 'rise'.
Yeast
Fermentation - creates bubbles of carbon dioxide... which causes the dough to rise, and gives bread light, open texture.
Yeast makes the bread rise. This happens due to alcoholic fermentation. This is so that the yeast can reproduce. :)
You can put yeast in bread dough to help it rise, in beer or wine to aid in fermentation, and in pizza dough to create a light and airy crust.
Fermentation causes bread dough to rise. Certain yeasts and bacteria are capable of producing energy from sugars through fermentation. Yeast such as S. cerevisiae causes bread dough to rise. - Intro to Biotechnology (Third Edition): Thieman & Palladino
Alcoholic fermentation
Bread. Without it, the bread would never rise.
alcohol fermentation -- the ethanol (alcohol) and carbon dioxide are produced by the yeast.
Fermentation and it releases Carbon Dioxide
carbon dioxide
Carbon dioxide
Carbon dioxide is the gas produced by yeast cells during fermentation that causes bread dough to rise through the process of leavening. This gas gets trapped in the dough, creating air pockets that expand and make the bread rise.