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Yeast Beast
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FONTS
Yeast
A Fungus Among Us
Fungus
Bread Rising
Yeast is a type of fungus and usually gets its nourishment from dead and decaying organic matter.
Yeast feeds by causing a chemical reaction in sugars, and, in the process, breaks down sugar to produce alcohol.
Yeast
Without yeast, all bread would be flat and hard like matzo.
In its dormant state, yeast looks like brown dust, yet it is very much alive! Yeast is a microscopic, one-celled organism that reproduces by means of spores and buds.
Natural Habitat
Rising Dough
As yeast "eats," it releases carbon-dioxide gas, creating bubbles.
Yeast thrives in warm and damp environments.
When it's cold and dry, yeast goes dormant as it waits for the right conditions.
Investigating Yeast
In this activity, you are going to find out what environmental conditions are ideal for yeast.
What are the basic needs of yeast?
Lab Activity
Measuring Respiration
These bubbles cause bread dough to rise
when yeast is used for baking.