Fungi is also used to create antibiotics. An antibiotic is a type of antimicrobial substance active against bacteria and is the most important type of antibacterial agent for fighting bacterial infections.
Yeasts consist of one cell, and belong to the taxonomic group called fungi, which also contains moulds. There are many species of yeasts. The most common yeast known is Saccharomyces cerevisiae, which is used in the baking- and brewing industry.