Apologia 4.2 Yeast and the Fermentation Process

IBy mixing yeast with water and feeding it with sugar, it grew.  The process is referred to as fermentation.  Bubbles form in the top layers.  The bubbles are made with carbon dioxide produced as a result of the fermentation process.  

In order to observe the bubbles, we looked at a sample under the microscope.  We also looked for yeast cells budding/ reproducing.  Also methylene blue stain helped to observe these.

standard sample

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blue stain

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