At list mention 5 characteristics of yeast

1)Baker’s yeast is a unicellular fungus that comes from Saccharomyces cerevisiae cells.

2)Yeast growth and processing affects its uses, appearance and purity

3)Active dry yeast is approximately 0.2 to 3 millimeters in diameter and spherical

4) Aroma

5)Fermentation temperature and anything added to the yeast during its production, change the flavor of the yeast

Explanation:

Not really sure if its correct but i tried its Composition, Production, Appearance, Flavor,and Aroma

the sphincter muscles at the end of the digestive tract is the anus.