AP Biology 2006-2007 Anaerobic Respiration Stages: 1. Glycolysis 2. Fermentation yeast.
After glycolysis, if there is not enough oxygen present, an anaerobic pathway is used to breakdown...
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Transcript of After glycolysis, if there is not enough oxygen present, an anaerobic pathway is used to breakdown...
![Page 1: After glycolysis, if there is not enough oxygen present, an anaerobic pathway is used to breakdown pyruvic acid called fermentation.](https://reader036.fdocuments.us/reader036/viewer/2022062401/5a4d1b917f8b9ab0599c0ff5/html5/thumbnails/1.jpg)
![Page 2: After glycolysis, if there is not enough oxygen present, an anaerobic pathway is used to breakdown pyruvic acid called fermentation.](https://reader036.fdocuments.us/reader036/viewer/2022062401/5a4d1b917f8b9ab0599c0ff5/html5/thumbnails/2.jpg)
• After glycolysis, if there is not enough oxygen present, an anaerobic pathway is used to breakdown pyruvic acid called fermentation.
![Page 3: After glycolysis, if there is not enough oxygen present, an anaerobic pathway is used to breakdown pyruvic acid called fermentation.](https://reader036.fdocuments.us/reader036/viewer/2022062401/5a4d1b917f8b9ab0599c0ff5/html5/thumbnails/3.jpg)
alcoholic fermentation • Yeasts, some bacteria, and even some
plants can use this process. Bread rises due to the CO2 produced during yeast fermentation.
• The alcohol in beer & wine is a result of yeast fermentation, as discovered by Louis Pasteur.
![Page 4: After glycolysis, if there is not enough oxygen present, an anaerobic pathway is used to breakdown pyruvic acid called fermentation.](https://reader036.fdocuments.us/reader036/viewer/2022062401/5a4d1b917f8b9ab0599c0ff5/html5/thumbnails/4.jpg)
Bees have been found drunk from fermented nectar.
![Page 5: After glycolysis, if there is not enough oxygen present, an anaerobic pathway is used to breakdown pyruvic acid called fermentation.](https://reader036.fdocuments.us/reader036/viewer/2022062401/5a4d1b917f8b9ab0599c0ff5/html5/thumbnails/5.jpg)
• Cells that engage in alcoholic fermentation convert pyruvic acid to ethyl alcohol. NADH is oxidized to NADH+.
• This is the importance of fermentation. It recycles NADH+ back to glycolysis in order to produce ATP. This way glycolysis can keep producing ATPs, even though the mitochondrion will not be involved.
![Page 6: After glycolysis, if there is not enough oxygen present, an anaerobic pathway is used to breakdown pyruvic acid called fermentation.](https://reader036.fdocuments.us/reader036/viewer/2022062401/5a4d1b917f8b9ab0599c0ff5/html5/thumbnails/6.jpg)
Lactic Acid Fermentation Pyruvic acid can build up in muscles
tissue after strenuous exercise, because there is not enough oxygen to meet the demands of the cells.
![Page 7: After glycolysis, if there is not enough oxygen present, an anaerobic pathway is used to breakdown pyruvic acid called fermentation.](https://reader036.fdocuments.us/reader036/viewer/2022062401/5a4d1b917f8b9ab0599c0ff5/html5/thumbnails/7.jpg)
Here again, NADH is oxidized to NADH+to keep glycolysis going and make ATPs.
![Page 8: After glycolysis, if there is not enough oxygen present, an anaerobic pathway is used to breakdown pyruvic acid called fermentation.](https://reader036.fdocuments.us/reader036/viewer/2022062401/5a4d1b917f8b9ab0599c0ff5/html5/thumbnails/8.jpg)
![Page 9: After glycolysis, if there is not enough oxygen present, an anaerobic pathway is used to breakdown pyruvic acid called fermentation.](https://reader036.fdocuments.us/reader036/viewer/2022062401/5a4d1b917f8b9ab0599c0ff5/html5/thumbnails/9.jpg)