Saccharomycetes is a class of fungi that includes yeasts, which are single-celled organisms. These tiny creatures play a crucial role in various processes, such as fermentation, where they convert sugars into alcohol and carbon dioxide. This process is essential in making products like bread, beer, and wine, showcasing the importance of Saccharomycetes in food and beverage production. Yeasts from the Saccharomycetes class are also used in scientific research and biotechnology. They serve as model organisms for studying cellular processes and genetics due to their simple structure and rapid growth. This makes them valuable tools for scientists exploring everything from disease mechanisms to the development of new medicines.