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Published byClinton Bennett Ferguson
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Fermentation Anaerobic Alternative to Aerobic Respiration
OK, if you are yeast... Making 2 ATP from glycolysis is enough
Only catch... NAD+ is used up So a cell needs a way to regenerate it
They Replenish NAD+ When yeast and bacteria convert pyruvic acid to CO 2 and ethanol (ethyl alcohol).
Alcoholic Fermentation “The production of ethanol from glucose” Is catalyzed by microbial (bacteria and yeast) enzymes
Yeast Acting on Pyruvic Acid Ethanol is released as a waste product O o o NAD+ CO 2
In Muscle Cells Lactic Acid Fermentation No CO 2 given off Eventually carried back to liver to be converted to pyruvic acid
Lactic Acid in Bacteria Used in dairy industry to make cheese and yogurt
Strict Anaerobes REQUIRE anaerobic (no oxygen) to live EXAMPLES: those that live in stagnant ponds and soil
Facultative Anaerobes Can make ATP by fermentation either by chemiosmosis or by fermentation, depending whether O 2 is present or not EXAMPLES: E. coli, yeasts
Why must oxygen be kept out of the wine and beer vats? If oxygen is present, the pyruvic acid will make CO2 and water. If oxygen is not present, yeast and bacteria will make ethanol and CO 2.
Ch. 6 Cellular Respiration 6.14 – Review: Each molecule of glucose yields many molecules of ATP Where do glycolysis & Krebs cycle take place & how.
Fermentation Cellular Respiration The respiration that we’ve discussed to this point has all relied on oxygen There are several types of respiration.
Fermentation H. Biology Ms. Kim. Fermentation Fermentation enables some cells to produce ATP without the use of oxygen (O2) Cellular respiration – Relies.
Fermentation. ATP - Adenosine TriPhosphate ATP is “spring-loaded” The phosphates have a negative charge –repel each other This means potential energy.
Anaerobic Energy Pathway. Fermentation Oxygen is not the final e- acceptor after the ETC Bacteria, protistans –Yogurt, yeast Glycolysis –2 NADH –2 ATP.
Fermentation Chapter 9. What you need to know! The difference between fermentation and cellular respiration.
Anaerobic Energy Pathway Read 7.6 (pages ).
Fermentation and Control of Cellular Respiration AP Biology Unit 4.
Introduction and Anaerobic Respiration pp
Fermentation allows glycolysis to continue.
Ch. 7: Cellular Respiration Getting Energy from food.
Fermentation Generating ATP without oxygen!. Some biochemistry When a cell generates large amounts of ATP through glycolysis NADH does not get converted.
CELL RESPIRATION Chapter 6. RESPIRATION Main goal = make ATP Cellular respiration is the reverse of the photosynthesis reaction Cell Respiration Chemical.
Fermentation Chapter 6. What you need to know! The difference between fermentation and cellular respiration.
Chapter 7 pgs Food to energy
Cellular Respiration In photosynthesis, light energy is stored in the bonds of glucose molecules in the chloroplasts of plant cells (or other autotrophs).
Glycolysis & Fermentation
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