yeast does du :) :0 look it up anyone knows that ask mom or dad
the yeast
Yeast.
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
It produces gases and causes the bread to rise.
Pan de sal is a kind of bread, meaning that the yeast causes it to rise like it causes any bread to rise. Namely, yeast causes fermentation, and in breads, this interaction with the monosaccharides found in the dough creates carbon dioxide bubbles that cause the bread to rise.
Carbon dioxide
Bread rises from having yeast react to warm water and eat up sugars in which causes bubbling in which makes bread rise. :D
C02 babe
Alcoholic fermentation
if there is no yeast in the bread the bread will not rise
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.
Fermentation and it releases Carbon Dioxide