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Week 6 Notes Principles of Biology

by: Takira Boyd

Week 6 Notes Principles of Biology BIOL 1504.9HO

Marketplace > Kankakee Community College > Biology > BIOL 1504.9HO > Week 6 Notes Principles of Biology
Takira Boyd

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4.4 Fermentation 4.5 Connections to Other Metabolic Pathways
Principles of Biology
Mr. Mager
Class Notes
Biology, Bio, Science, concepts
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This 2 page Class Notes was uploaded by Takira Boyd on Tuesday October 4, 2016. The Class Notes belongs to BIOL 1504.9HO at Kankakee Community College taught by Mr. Mager in Winter 2016. Since its upload, it has received 6 views. For similar materials see Principles of Biology in Biology at Kankakee Community College.

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Date Created: 10/04/16
Principles of Biology BIOL 1504.9HO Week 6 Notes  4.4 Fermentation  Fermentation­ anaerobic (without oxygen) cellular process in which organic foods are made into simpler compounds =chemical energy (ATP) is produced  Inorganic Molecules is the same as saying the use of something other than oxygen  Some organisms use IM = NAD+  Anaerobic­ no use of oxygen  Both methods are anaerobic= NAD+  Lactic Acid Fermentation is used by some animals and bacteria   Ex: mammalian red blood cells, in muscles that have been exhausted, and in the  skeletal system  Chemical Reaction of Lactic Acid Fermentation: Pyruvic Acid + NADH             lactic acid +NAD+  Lactate Dehydrogenase­ this enzyme catalyzes this reaction, can go in any  direction, left to right (inhibited by acidic conditions) Alcohol Fermentation  Produces ethanol (is an alcohol)  Reaction is: Pyruvic Acid              CO2 + Acetaldehyde                     Acetaldehyde               Ethanol                                                     NADH       NAD+  Pyruvic Acid makes ethanol which is found in alcoholic beverages  Ethanol that is above 12% is toxic to yeast Anaerobic Cellular Respiration Some prokaryotes, some types of bacteria, and Archaea use AC, especially  Archaea named methanogens Some prokaryotes are facultative anaerobic (can switch between aerobic  respiration and fermentation… is dependent on oxygen) Clostridia bacteria are obligate anaerobic; oxygen is poison to them=kills them on exposure  All types of fermentation release gas except Lactic Acid Fermentation  4.    Connections to Other Metabolic Pathways  Carbohydrates, proteins, and lipids connect with the pathways of glucose  catabolism.   The carbohydrates include galactose, fructose, and glycogen= glycolysis.   The amino acids + glucose catabolism through pyruvate, acetyl CoA, and  components of the citric acid cycle.   Cholesterol synthesis + acetyl CoA, and the components of triglycerides are  picked up by acetyl CoA and enter the citric acid cycle.


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