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What are the stages of cellular respiration? ► Glycolysis ► Citric acid cycle/ krebs cycle ► Oxidative phosphorylation Citric acid cycle Transition between glycolysis and citric acid cycle Things to remember ►1 ATP is made per turn of the cycle (per pyruvate) ► 2 CO2 are made (all the carbons are gone that started in the glucose) ► 3 NADH and 1 FADH2 are made CellularRespiration.mpg Oxidative phosphorylation activity Check for understanding (you can use your book) Starting molecule 1. Glycolysis Transition step 2.Citric acid cycle (aka Krebs) 3.Oxidative phosphorylation End Product Location How much ATP was produced? How much NADH or FADH2 ? Check for understanding (you can use your book) How much ATP was produced? How much NADH or FADH2 ? 2 2 NADH 2 pyruvate 2 Acetyl Mitochondrial co-A, 2CO2 matrix None 2NADH 2.Citric acid cycle (aka Krebs) 2 Acetyl Co-A 4 CO2 Mitochondiral matrix 2 6 NADH, 2 FADH2 3.Oxidative phosphorylation Electrons shuttled by NADH or FADH2 ATP Inner membrane of mitochondira 32-34 Not applicable 1. Glycolysis Transition step Starting molecule End Product Location 1 glucose 2 pyruvate Cytosol Cellular respiration Something to ponder ► What about the fats and proteins that we eat… can we get energy from them too? Fermentation FERMENTATION WORKSHEET Review Cellular Respiration C6H12O6 + 6O2 6 Co 2 + 6H2O Photosynthesis 6 Co 2 + 6H2O + light C6H12O6 + 6O2 ►a. In which equation is energy stored? ►b. Where does the energy come from? ►c. How is the potential energy stored? ►d. In which equation is energy released? ►e. What is the stored form of energy used in cell respiration? ►f. How is that energy released in a stepwise fashion? ► ► ► ► ► a. In which equation is energy stored? (photosynthesis gathers and stores potential energy when the sun is shining) b. Where does the energy come from? (the sun; UV radiation) c. How is the potential energy stored? (in the form of carbohydrates, which can be modified to form other organic molecules) d. In which equation is energy released? (cell respiration) e. What is the stored form of energy used in cell respiration? (glucose usually, but other organic molecules can be used instead) ► f. How is that energy released in a stepwise fashion? (one molecule of glucose is used to form 36-38 ATP molecules, each of which can go on to fuel different reactions)