POWER AND SYRED / SCIENCE PHOTO LIBRARY POWER AND SYRED / SCIENCE PHOTO LIBRARY
Yeast cells. Coloured scanning electron micrograph (SEM) of budding yeast cells (Saccharomyces cerevisiae). Known as baker's or brewer's yeast, this fungus consists of single vegetative cells. The larger "mother" cells are budding off smaller daughter cells in cell division. Saccharomyces cerevisiae is able to ferment sugar, producing alcohol and carbon dioxide in the process. It has long been used in the brewing of beer, production of wine, and in baking leavened bread (causing the dough to rise). Magnification: x4,000 at 5x7cm size.
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