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Saccharomyces cerevisiae, the yeast used in baking and brewing, is commonly found in natural habitats like the skins of fruits, on plant surfaces, and in soil. It is also present in the intestines of animals and insects.
Saccharomyces cerevisiae typically exists as a single-celled organism and forms round to oval-shaped cells. These cells can occur singly or in clusters depending on the growth conditions, but their most common arrangement is as individual yeast cells.
The common name for Saccharomyces cerevisiae is baker's yeast.
Saccharomyces cerevisiae is a eukaryotic organism. It is a type of yeast that belongs to the domain Eukaryota, which includes all organisms with cells that have a nucleus and other membrane-bound organelles.
Mannitol salt agar inoculated with Micrococcus luteusshowing no fermentation of mannitol (pink medium). The colonies show a yellow pigment which is characteristic of M. luteus.
The Petite strain of Saccharomyces cerevisiae lacks functional mitochondrial DNA, which affects its ability to produce energy through oxidative phosphorylation. The Grande strain, on the other hand, has functional mitochondrial DNA and can produce energy through both fermentation and oxidative phosphorylation.