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Photosynthesis Cellular Respiration I Cellular Respiration II Enzymes Potpourri 100 100 100 100 100 200 200 200 200 200 300 300 300 300 300 400 400 400 400 400 500 500 500 500 500 What molecule is oxidized to donate electrons for photosynthesis? H20 is oxidized and donates it’s electrons to the reaction centre of photosystem II What are the products of the light reaction in photosynthesis? ATP and NADPH 1 turn of the Clavin Cycle generates this 3 carbon molecule: PGAL (Phosphoglyceraldehyde) which when combined with another PGAL forms Glucose Which molecule gets reduced in the light dependent reactions of photosynthesis? NADP is reduced as it gains electrons and hydrogen to form NADPH In photosynthesis, a chemiosmotic gradient of this molecule allows ATP synthase to produce ATP. A hydrogen gradient is created across the thylakoid membrane a this differential gives ATP synthase enough energy to produce an ATP. This phase of cellular respiration does not require oxygen Glycolysis does not require O2 and initiates aerobic as well as anaerobic respiration. What is the net production of ATP from Glycolysis? 2 ATP are produced in glycolysis. Name the two coenzymes that transport hydrogen in mitochondria. NAD and FAD are the coenzymes that transport hydrogen. What is the net production of ATP from lactic acid fermentation? The only 2 ATP are from glycolysis How many NADH molecules are produced in ethanol fermentation? None – the two that are produced in glycolysis are used when converting pyruvate to ethanol How many ATP (net) are produced in aerobic cellular respiration 36 Total ATP Each NADH contains enough energy to produce _____ ATP’s 3 ATP’s per NADH 2 ATP’s per FADH The Kreb’s cycle produces CO2. Where else in cellular respiration is CO2 emitted? 2 CO2 molecules are lost in between Glycolysis and the Kreb’s cycle (in the production of Acetyl-CoA) What is the net production of ATP from ethanol fermentation? 2 ATP molecules are produced in the Glycolysis phase of anaerobic respiration Which NADP generate more energy for the cell, those produced in the cytoplasm or those produced in the mitochondria? Those produced in the mitochondria generate more energy as they don’t need to be transported into the mitochondria What do enzymes do? Catalyze / speed up reactions Co-enzymes are similar to enzymes. Name one that is important for photosynthesis. NADP is a coenzyme used in photosynthesis What is the name of the enzyme that breaks eliminates H2O2 from our tissues? Catalase Name 3 conditions that affect the speed of a reaction Temperature, pH, Surface Area, Amount of enzyme, Amount of substrate / product The name of the enzme responsible for fixing CO2 from the atmosphere in the Calvin Cycle. Rubisco What is the first law of thermodynamics? What is the second law of thermodynamics? What does it mean to be “oxidized”? What is the name for the reaction when light energy splits a water molecule? How many fish are there in the MCHS fishtank? How many fish are there in the MCHS fishtank?