Anaerobic Respiration Overview-1.ppt

There are two types of respiration: What if oxygen is missing? O2  Can’t complete aerobic respiration  Occurs in the cytoplasm  alcohol fermentation  yeast  glucose ATP + CO2+ alcohol  make beer, wine, bread  lactic acid ferm...

There are two types of respiration: What if oxygen is missing? O2  Can’t complete aerobic respiration  Occurs in the cytoplasm  alcohol fermentation  yeast  glucose ATP + CO2+ alcohol  make beer, wine, bread  lactic acid fermentation  bacteria, animals  glucose ATP + lactic acid  make yogurt  animals feel muscle fatigue but only makes a net of 2 ATP! Alcohol Fermentation  Used to make bread and alcohol products  uses yeast  Produces CO2 and alcohol  In making bread alcohol burns off and CO2 makes bread rise  In producing alcohols, the alcohol is used to produce the beverage, CO2 is released No oxygen present in some plants or fungi-Anaerobic Fermentation-- Alcohol Fermentation 2 Pyruvic Acid Lactic Acid Fermentation  Used to make yogurt and some cheeses – the producer of these is bacteria OR  When muscles are overly exerted the oxygen is depleted in the cells. Lactic acid then builds up in animal cells and causes muscle fatigue and sore muscles the next day.  No oxygen present in animals and some bacteria. Anaerobic Fermentation--Lactic Acid Fermentation 2 Pyruvic Acid 2 Lactic Acid We use lactic acid fermentation  When we don’t have enough oxygen for our ATP requirements in our muscles. Short – bursts of energy – anaerobic exercise  The lactic acid is what causes cramps when you don’t stretch (increase blood flow to the muscle)  This lactic acid has to go back to the liver where it is turned back into glucose. Oxygen Debt – You have to continue to breathe hard in order to make more ATP to convert lactic acid back to glucose.  Important in the Fight or Flight mechanism in animals !  Anaerobic Respiration  Anaerobic = does not require oxygen  (Fermentation) – Breaks down glucose only partially and creates a total of 4 ATP and net of 2 ATP  Lactic Acid Fermentation—animals, bacteria  Alcoholic Fermentation—fungi like yeast, plants  Occurs in the cytoplasm  Requires 2 ATP to activate the cycle Aerobic Respiration  Aerobic = requires oxygen  Occurs in the mitochondria  Breaks down glucose completely and creates a total of 38 ATP and a net of 36 ATP  Requires 2 ATP to activate the cycle Anaerobic Respiration Overview