the normal function of our brain cells.
Yeast. Cells of brewer’s yeast, Saccharomyces
cerevisiae, as seen through an electron
microscope. Each is about 0.005 mm in
diameter. The cell at the upper right center is
in the process of reproducing, and bears the
scars of previous buddings.
Yeasts and Alcoholic Fermentation
Yeasts are a group of about 160 species of
single-celled microscopic molds. Not all are
useful: some cause the spoilage of fruits and
vegetables, some cause human disease (for
example, the yeast infection of Candida