Bakers who want to be sure their yeast is alive proof it. They test the yeasts viability by putting a bit of it in warm water with some sugar. If the yeast is alive, bubbles will appear in the mix. What gas in the bubble and how is it formed?

Biology Today and Tomorrow without Physiology (MindTap Course List)
5th Edition
ISBN:9781305117396
Author:Cecie Starr, Christine Evers, Lisa Starr
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Chapter14: Plants And Fungi
Section: Chapter Questions
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Bakers who want to be sure their yeast is alive proof it. They test the yeasts viability by putting a bit of it in warm water with some sugar. If the yeast is alive, bubbles will appear in the mix. What gas in the bubble and how is it formed?

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