Question

yeast undergo fermentation in the production of bread. during this process, what product is made that causes the bread dough to rise?
oxygen
water
glucose
carbon dioxide
ethanol

Explanation:

Yeast undergoes fermentation in bread - making. Fermentation is an anaerobic process. In this process, yeast breaks down sugars. One of the by - products of yeast fermentation is carbon dioxide gas. The carbon dioxide gas gets trapped in the bread dough. As the gas accumulates, it creates bubbles, which cause the dough to rise. Oxygen is not a product of yeast fermentation in this context. Water is already present in the dough and is not the rising agent. Glucose is consumed (not produced in a way that causes rising) during fermentation. Ethanol is also a product of yeast fermentation but it evaporates during baking and does not cause the dough to rise.

Answer:

carbon dioxide