BIOL 1107 1nd Edition Lecture 15 Outline of Last Lecture I Enzyme Regulation II Cellular Respiration CR III Mitochondria v Chloroplasts IV Energy from Food V Electron Carriers VI CR Stage 1 Glycolysis VII CR Stage 2 Pyruvate Acetyl CoA Outline of Current Lecture I CR Stage 3 Citric Acid cycle Krebs II CR Stage 4 Oxidation Phosphorylation III Regulation of Cellular Respiration process Current Lecture I CR Stage 3 Citric Acid cycle Krebs These notes represent a detailed interpretation of the professor s lecture GradeBuddy is best used as a supplement to your own notes not as a substitute Q You eat some candy For each sucrose molecule broken down how many ATP are produced directly by Krebs cycle A 2 ATPs for glucose 2 ATPs for fructose 4 ATPs total for each sucrose II Substrate level phosphorylation phosphate from other molecules adds to ADP to form ATP CR Stage 4 Oxidation Phosphorylation Cellular location inner membrane of mitochondria Products ATP water Is O2 required Yes Remember NAD makes more ATP than FAD In this step of cellular respiration oxygen is the very last electron acceptor this is one of the main reasons why it is so important in our body Oxygen is reduced makes water H20 Active transport used to transport H ions into intermembrane space low to high concentration Facilitated diffusion used for moving H down ATP synthase down concentration gradient ATP synthase works kind of like a dam important enzyme that provides energy for the cell to use through the synthesis of adenosine triphosphate ATP ATP is the most commonly used energy currency of cells from most organisms III Regulation of Cellular Respiration process Cellular respiration must be regulated in order to provide balanced amounts of energy in the form of ATP Various mechanisms and enzymes are used to ensure that the process runs smoothly Q You are on a diet and lost 10 lbs Where did the weight go A CO2 we convert sugar and lipids into CO2 and you need protein for muscle
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