|Yeast cells under a microscope.|
|A diagram of a typical yeast cell|
A particular species of yeast, Saccharomyces cerevisiae, has been used for thousands of years. It is used for baking bread because the yeast makes carbon dioxide as a by-product of it eating sugar. Yeast is also used for making beer due to a process known as fermentation. This process produces both ethyl alcohol and carbon dioxide. Ethanol is also used as fuel, and to make other organic chemicals.
- Effects of Water Temperature on Production of Carbon Dioxide Foam by Yeast - Sophie Challis
Media related to Yeast at Wikimedia Commons