Cellular Respiration Notes PDF

Cellular Respiration What organisms do cell respiration?  Cellular Respiration EVERYBODY DOES CELLULAR RESPIRATION! Why? Is a catabolic pathway Catabolism-breaks down molecules into smaller units and releases energy Cellular Respiration Cellular respiration is...

Cellular Respiration What organisms do cell respiration?  Cellular Respiration EVERYBODY DOES CELLULAR RESPIRATION! Why? Is a catabolic pathway Catabolism-breaks down molecules into smaller units and releases energy Cellular Respiration Cellular respiration is a chemical process that uses oxygen to convert the chemical energy stored in glucose into ATP. + + C6H12O6 O2 H2O CO2 ATP Oxygen Water Glucose Adenosine Triphosphate Carbon Dioxide C6H12O6 + 6 O2 → 6 CO2 + 6 H2O (36-38 molecules of ATP) What do you notice about the products and reactants of photosynthesis and cell respiration? What structure is this? Cell Respiration starts in the cytoplasm, but ends in the mitochondria  Mitochondria Contains the following: a double outer membrane, a folded inner membrane (cristae (folds)), an outer compartment matrix. When things are folded, what are you increasing?  Mitochondria Contains the following: a double outer membrane, a folded inner membrane (cristae (folds)), an outer compartment matrix. When things are folded, what are you increasing?  Cellular Respiration Has 3 main stages: 1. Glycolysis (used by all organisms) 2. Kreb’s cycle (citric acid cycle) 3. Electron transport chain What is the whole purpose of cell respiration?  Cellular Respiration Has 3 main stages: 1. Glycolysis (used by all organisms) 2. Kreb’s cycle (citric acid cycle) 3. Electron transport chain What is the whole purpose of cell respiration?  Stages of Cellular Respiration 1. Glycolysis (Cytoplasm) Glucose → pyruvic acid Creates 2 ATP and 2 NADH Every organism on Earth does glycolysis  Stages of Cellular Respiration 2. The Kreb’s Cycle (Mitochondrial matrix) Releases 6 CO2 molecules Generates 2 molecules of ATP Also creates NADH and FADH2 (electron carriers) for the final reaction  Stages of Cellular Respiration 3. The Electron Transport Chain (Inner Membrane) Electrons from NADH and FADH2 used to create a lot of ATP O2 → H2O  Summary Of Cellular Respiration Total ATP Production = 32-38 Cellular respiration is the most common and efficient energy producing pathway  Anaerobic Respiration Does NOT require oxygen Occurs in the cytoplasm Stops after glycolysis, only produces 2 ATP molecules per glucose.  Anaerobic Respiration Two main types of Anaerobic Respiration: Lactic Acid Fermentation Happens in animals and bacteria Alcoholic Fermentation Happens in microorganisms  Lactic Acid Fermentation Products of glycolysis are converted into lactic acid. Muscle cells switch to lactic acid fermentation (produces 2 ATP) when little oxygen is present. NO CO2 is produced  Alcoholic Fermentation Used by many microorganisms (ex. yeast) The products of glycolysis are converted to CO2 and ethyl alcohol  Anaerobic Aerobic With O2 No O2 Cytoplasm Krebs Cycle Fermentation Electron Lactic Acid Transport Glycolysis Alcohol Chain Mitochondria 2 ATP 36-38 ATP