- Enzyme: Proteins called enzymes to assist our bodies' chemical reactions, or metabolism, go more quickly.
- Enzymes are found in all living organisms. Example: Lipase, Maltase, Trypsin, Amylase.
- Yeast: Saccharomyces cerevisiae, the single-celled organism that makes up yeast, needs nutrients, temperature, and moisture to survive.
- There are a number of additional little enzymes found in yeast, each of which contributes in some manner to the total alterations made by the activity of the yeast in the dough.
- Two of the most common enzymes in yeast are maltase and invertase.
Hence, yeast is an enzyme.