Yeast is a tiny form of fungi scientists refer to as “microorganisms”. They are
egg-shaped cells that can only be seen with a microscope. It takes
20,000,000,000 (twenty billion) yeast cells to weigh one gram or 1/28 of an
ounce.
A tiny organism with a long name
The scientific name for one species of yeast is SACCHAROMYCES CEREVISIAE,
or sugar-eating fungus. […]

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