VI. Anaerobic VI. Anaerobic Respiration Respiration This process occurs when This process occurs when oxygen is oxygen is NOT NOT available available to produce to produce ATP ATP . . OR FOR ORGANISMS THAT DON’T OR FOR ORGANISMS THAT DON’T NEED AS MUCH ENERGY! NEED AS MUCH ENERGY!
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VI. Anaerobic Respiration This process occurs when oxygen is NOT available to produce ATP. This process occurs when oxygen is NOT available to produce.
B. No oxygen available so: 1. No free NAD+ molecules in the cell 2. Fermentation does NOT produce ATP. 2. Fermentation does NOT produce ATP. (The only ATP from anaerobic respiration is from glycolysis!) A. It changes NADH- to NAD+, so glycolysis can continue..
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VI. Anaerobic VI. Anaerobic RespirationRespiration
This process occurs when This process occurs when oxygen is oxygen is NOTNOT available to available to
produceproduce ATPATP..
OR FOR ORGANISMS THAT DON’T OR FOR ORGANISMS THAT DON’T NEED AS MUCH ENERGY!NEED AS MUCH ENERGY!
A. 2 Stages to ANaerobic CRA. 2 Stages to ANaerobic CR11. . GlycolysisGlycolysis – – 11stst stage stage (same as normal (same as normal
CR)CR) a. Reactant: Glucosea. Reactant: Glucose
b. Products: 2 ATPb. Products: 2 ATP 2 NADH2 NADH 2 pyruvic acid 2 pyruvic acid
E. Lactic Acid E. Lactic Acid FermentationFermentation
1. Takes place in: 1. Takes place in: a. skeletal muscle cells a. skeletal muscle cells during vigorous during vigorous exercise exercise i. muscles can’t get oxygen fast enough i. muscles can’t get oxygen fast enough for for aerobic CRaerobic CR
ii. creates burning and sorenessii. creates burning and soreness in muscles during and after in muscles during and after
exercise.exercise.
b. In the food industry, bacteria b. In the food industry, bacteria use lactic acid to make: use lactic acid to make:
i. dairy productsi. dairy products
ii. pickled productsii. pickled products
The NAD+ allows glycolysis to happen again.
4. Reactants: Pyruvic Acid and NADH (from glycolysis)
1. 1. Cell type-Cell type- Bacteria and yeast Bacteria and yeast
2. 2. ReactantReactant- glucose- glucose
3. 3. ProductsProducts- Alcohol, carbon dioxide and NAD+- Alcohol, carbon dioxide and NAD+ Energy – 2 ATP- FROM GLYCOLYSIS Energy – 2 ATP- FROM GLYCOLYSIS NOT FERMENTATIONNOT FERMENTATION
Anaerobic Anaerobic Lactic AcidLactic Acid1. 1. Cell type-Cell type- muscle cells when no oxygen muscle cells when no oxygen
available (and bacteria) available (and bacteria)
2. 2. ReactantReactant- glucose- glucose
3. 3. ProductsProducts- lactic acid and NAD+- lactic acid and NAD+Energy – 2ATP – FROM Energy – 2ATP – FROM GLYCOLYSIS NOT GLYCOLYSIS NOT ERMENTATION!ERMENTATION!