You never hear about bakery emergencies in which runaway bread dough threatens to take over the world. There must be some reason why yeast doesn’t pose this kind of threat. Think about it…


When yeast cells multiply in bread dough, where do you think the matter that makes up the new cells comes from?


Do you think there’s any limit to how large the population of yeast cells can grow in a blob of bread dough?


What are some things yeast must be able to do in order to live and reproduce itself?

Be ready to share what you talked about in your discussion with the rest of the class.