Biology 3 - Using microorganisms to make food and drink
Bacteria are used to make yoghurt and cheese.
A bacteria culture is added too warm milk.
The milk suger ferments into lactic acid.
The lactic acid causes the milk to clot (solidify) into yoghurt.
Yeast is used in making bread and alcoholic drinks such as beer.
What is yeast?
Yeast is a single celled organism with a nucleus, cytoplasm, cell…