logging in or signing up Cellular_Respiration[1] wdorsey Download Post to : URL : Related Presentations : Share Add to Flag Embed Email Send to Blogs and Networks Add to Channel Uploaded from authorPOINT lite Insert YouTube videos in PowerPont slides with aS Desktop Copy embed code: (To copy code, click on the text box) Embed: URL: Thumbnail: WordPress Embed Customize Embed The presentation is successfully added In Your Favorites. Views: 40 Category: Education License: All Rights Reserved Like it (0) Dislike it (0) Added: February 17, 2009 This Presentation is Public Favorites: 0 Presentation Description No description available. Comments Posting comment... Premium member Presentation Transcript Cellular Respiration : Cellular Respiration BIOLOGY Cellular Respiration : Cellular Respiration Aerobic (requires oxygen) A cellular process that requires oxygen and gives off carbon dioxide. Most often involves breaking down glucose to make CO2, H2O, and ATP. Glycolysis : Glycolysis Occurs in cytosol. Energy within a glucose is released slowly. Costs 2 ATP to start. (-2) Makes 4 ATP. (+4) Net gain of 2 ATP. (=2) Reactants – glucose Products – pyruvic acid, NADH & ATP The Krebs cycle : The Krebs cycle Reactants – Pyruvate, NAD+, FAD Has 8 steps with 8 different enzymes. Products – 2 ATP, NADH, FADH2 Occurs in matrix of mitochondria Electron Transport System : Electron Transport System As electrons pass down the electron transport system, energy is captured and ATP is produced. The total of 32-34 ATP produced by ETS is calculated by allowing 3 ATP per NADH and 2 ATP per FADH2 that enter the ETS. Occurs on the inner membrane folds of mitochondria Figure 9.5 An introduction to electron transport chains : Figure 9.5 An introduction to electron transport chains Chemiosmosis couples the electron transport chain to ATP synthesis : Chemiosmosis couples the electron transport chain to ATP synthesis Yellow arrow = electron flow Red arrow = proton flow to form ATP Figure 9.14 ATP synthase, a molecular mill : Figure 9.14 ATP synthase, a molecular mill Slide 9: Cellular Respiration Summary Fermentation : Fermentation Glycolysis followed by reduction of pyruvate to either lactate or alcohol & CO2 Anaerobic (no oxygen) Can provide rapid burst of ATP. Yields only 2 ATP Fermentation : Fermentation Alcohol--yeast produce wine and beer and cause bread to rise. Lactic Acid—bacteria produce yogurt, sauerkraut, cheese. Also in muscle cells when working anaerobically. Comparison of Cellular Respiration versus Fermentation : Comparison of Cellular Respiration versus Fermentation One mole of glucose yields 686 kcal. Cellular respiration - 263/686 = 38% of available energy is used. Fermentation - 15/686 or 2% of available energy. The Formulas : The Formulas Cellular Respiration 6O2 + C6H12O6 ? 6CO2 + 6H2O + energy Long term, continuous use of energy Lactic Acid Fermentation pyruvic acid + NADH ? lactic acid + NAD+ Short spurts of energy in emergency situations then muscle fatigue and cramps Alcoholic Fermentation pyruvic acid + NADh ? alcohol + CO2 + NAD+ You do not have the permission to view this presentation. In order to view it, please contact the author of the presentation.
Cellular_Respiration[1] wdorsey Download Post to : URL : Related Presentations : Share Add to Flag Embed Email Send to Blogs and Networks Add to Channel Uploaded from authorPOINT lite Insert YouTube videos in PowerPont slides with aS Desktop Copy embed code: (To copy code, click on the text box) Embed: URL: Thumbnail: WordPress Embed Customize Embed The presentation is successfully added In Your Favorites. Views: 40 Category: Education License: All Rights Reserved Like it (0) Dislike it (0) Added: February 17, 2009 This Presentation is Public Favorites: 0 Presentation Description No description available. Comments Posting comment... Premium member Presentation Transcript Cellular Respiration : Cellular Respiration BIOLOGY Cellular Respiration : Cellular Respiration Aerobic (requires oxygen) A cellular process that requires oxygen and gives off carbon dioxide. Most often involves breaking down glucose to make CO2, H2O, and ATP. Glycolysis : Glycolysis Occurs in cytosol. Energy within a glucose is released slowly. Costs 2 ATP to start. (-2) Makes 4 ATP. (+4) Net gain of 2 ATP. (=2) Reactants – glucose Products – pyruvic acid, NADH & ATP The Krebs cycle : The Krebs cycle Reactants – Pyruvate, NAD+, FAD Has 8 steps with 8 different enzymes. Products – 2 ATP, NADH, FADH2 Occurs in matrix of mitochondria Electron Transport System : Electron Transport System As electrons pass down the electron transport system, energy is captured and ATP is produced. The total of 32-34 ATP produced by ETS is calculated by allowing 3 ATP per NADH and 2 ATP per FADH2 that enter the ETS. Occurs on the inner membrane folds of mitochondria Figure 9.5 An introduction to electron transport chains : Figure 9.5 An introduction to electron transport chains Chemiosmosis couples the electron transport chain to ATP synthesis : Chemiosmosis couples the electron transport chain to ATP synthesis Yellow arrow = electron flow Red arrow = proton flow to form ATP Figure 9.14 ATP synthase, a molecular mill : Figure 9.14 ATP synthase, a molecular mill Slide 9: Cellular Respiration Summary Fermentation : Fermentation Glycolysis followed by reduction of pyruvate to either lactate or alcohol & CO2 Anaerobic (no oxygen) Can provide rapid burst of ATP. Yields only 2 ATP Fermentation : Fermentation Alcohol--yeast produce wine and beer and cause bread to rise. Lactic Acid—bacteria produce yogurt, sauerkraut, cheese. Also in muscle cells when working anaerobically. Comparison of Cellular Respiration versus Fermentation : Comparison of Cellular Respiration versus Fermentation One mole of glucose yields 686 kcal. Cellular respiration - 263/686 = 38% of available energy is used. Fermentation - 15/686 or 2% of available energy. The Formulas : The Formulas Cellular Respiration 6O2 + C6H12O6 ? 6CO2 + 6H2O + energy Long term, continuous use of energy Lactic Acid Fermentation pyruvic acid + NADH ? lactic acid + NAD+ Short spurts of energy in emergency situations then muscle fatigue and cramps Alcoholic Fermentation pyruvic acid + NADh ? alcohol + CO2 + NAD+