Biology 3 - Using microorganisms to make food and drink

Biology 3 - Using microorganisms to make food and drink

Bacteria are used to make yoghurt and cheese.

In yoghurt...

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…