2 Cellular RespirationThe process by which the mitochondria breaks down glucose to produce ATP is called cellular respiration.C6H12O O2 6CO2 + 6H2O
3 Cellular RespirationEnergy is in the form of an ATP molecule. In order to make ATP, we must take in oxygen, and glucose. Our bodies convert oxygen and glucose to ATP in the mitochondria. As a byproduct, we release carbon dioxide, water and HEAT.
4 Cellular RespirationWhen the body has oxygen, aerobic respiration can take place and produce 38 energy molecules.There are 3 stages of aerobic respiration:GlycolysisCitric acid cycle (Kreb’s Cycle)Electron transport chain
5 Glycolysis Glycolysis takes place in the cytoplasm of the cell. The net gain of ATP molecules in glycolysis is 2 ATP molecules.
6 GlycolysisGlycolysis is the process where glucose is broken down in 2 pyruvic acid molecules.Following glycolysis, the pyruvic acid moves into the mitochondria.Pyruvic acid
7 The Citric Acid Cycle Kreb’s cycle AKAKreb’s cyclePyruvic acid enters the citric acid cycle and becomes broken down. As this occurs, 2 carbon dioxide molecules are released.In addition, 2 ATP molecules are released.
8 The Electron Transport Chain The last step of respiration is the electron transport chain or ETC.In the presence of oxygen, the electron transport chain will produce 34 ATP molecules and water.The grand total of ATP molecules released from AEROBIC respiration is 38.38383838
9 Anaerobic Respiration AKAFermentationThere are times, such as during heavy exercise, when your cells are without oxygen for a short period of time. When this happens, anaerobic respiration is taking place.In anaerobic respiration, the first step of respiration will take place; however, the Kreb’s Cycle and ETC will not take place.The grand total of ATP molecules released will be 2.
10 Types of Anaerobic Respiration When our cells run out of oxygen and begin fermentation, we build up lactic acid. That lactic acid build up in the muscle makes us feel a cramp.C6H12O6 ATP + lactic acidLactic Acid Fermentation
11 Types of Anaerobic Respiration Some bacteria also undergo fermentation. They release ethyl alcohol and carbon dioxide.C6H12O6 ATP + CO2 + ethyl alcoholThis process is key for the bacteria that create wine and apple juice.Yeast also undergo this type of fermentation when making bread.Alcoholic Fermentation
13 Comparing Photosynthesis and Respiration Glucose madeLight energy requiredATP broken down in 2nd phase of p.s.CO2 taken inO2 releasedNeeds waterTakes place in chloroplastTakes place in autotrophsGlucose broken downLight is not requiredEnergy created in ATPCO2 releasedO2 taken inWater releasedTakes place in mitochondriaRequire use of ATP moleculesTake place in plantsNecessary to sustain all life on earth