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Transcript
Ch. 10 Photosynthesis Converting Solar Energy into Chemical Energy…here we go! Overview of Energy Transfer Net Equation for Photosynthesis: Net Equation for Aerobic Respiration: Overview of Energy Transfer solar energy Why are photosynthesis and cellular respiration often considered opposites of each other? Photosynthesis chloroplast CO2 + H2O C6H12O6 + O2 Cellular Respiration mitochondrion ATP! excess heat Thomas Englemann Experiment Procedure: Results: Conclusion: Thomas Englemann Experiment Procedure: Results: Conclusion: Photosynthesis – the basics! cytoplasm H 2O CO2 solar energy stroma NADP ADP 2. Calvin cycle 1. Light Reactions thylakoid membrane chloroplast ATP NADPH O2 C6H12O6 Light Reactions – the details! primary acceptor H2O O2 light energy e- e- chlorophyll photosystem I photosystem II Light Reactions – the details! primary acceptor e- primary acceptor e- eNADP NADP Reductase NADPH H2O O2 light energy e- light energy ephotosystem I photosystem II Light Reactions – the details! primary acceptor e- primary acceptor e- eNADP NADP Reductase NADPH Cytochrome complex H2O O2 light energy e- ETC involved in making ATP e- light energy ATP! photosystem I photosystem II Illustration of Light-Dependent Reactions of Photosynthesis Illustration of Light-Dependent Reactions of Photosynthesis Illustration of Light-Dependent Reactions of Photosynthesis How ATP is made in the ETC of the thylakoid membrane… How ATP is made in the ETC of the thylakoid membrane… stroma light energy eH2O e thylakoid membrane PII O2 PI How ATP is made in the ETC of the thylakoid membrane… stroma light energy light energy e- PI e- PII eH2O thylakoid membrane O2 NADP eNADP Reductase NADPH Calvin cycle How ATP is made in the ETC of the thylakoid membrane… stroma light energy light energy e- PI PII e- eH2O thylakoid membrane O2 NADP NADP Reductase e-NADPH Calvin cycle How ATP is made in the ETC of the thylakoid membrane… ETC becomes proton pump! H+ H+ H+ H+ H+ H+ H+ H+ Calvin cycle X ADP ATP How ATP is made in the ETC of the thylakoid membrane… - - ATP Reminder - - Cylic Electron Flow Alternative…Why? Cylic Electron Flow Alternative…Why? Some plants have adaptations in regard to photosynthesis in order to survive arid environments. Why would these adaptations be necessary? What theme of AP biology could this be an example of? Practice #1 When light strikes chlorophyll molecules, they lose electrons, which are ultimately replaced by _____. A. splitting of water B. breaking down ATP C. removing them from NADPH D. fixing carbon E. oxidizing glucose Practice #1 When light strikes chlorophyll molecules, they lose electrons, which are ultimately replaced by _____. A. splitting of water B. breaking down ATP C. removing them from NADPH D. fixing carbon E. oxidizing glucose Practice #2 Which of the following is produced by the light reactions of photosynthesis and consumed by the Calvin cycle? A. sugar B. oxygen C. water D. NADPH and ATP E. ADP + Pi Practice #2 Which of the following is produced by the light reactions of photosynthesis and consumed by the Calvin cycle? A. sugar B. oxygen C. water D. NADPH and ATP E. ADP + Pi Practice #3 Carbon dioxide is utilized in photosynthesis during A. the light reactions. B. the Krebs cycle. C. the Calvin cycle. D. the electron transport chain. E. ATP synthesis. Practice #3 Carbon dioxide is utilized in photosynthesis during A. the light reactions. B. the Krebs cycle. C. the Calvin cycle. D. the electron transport chain. E. ATP synthesis. Practice #4 Which of the following is NOT a product of the light reactions of photosynthesis? A. oxygen B. sugar C. high-energy electrons D. ATP E. NADPH Practice #4 Which of the following is NOT a product of the light reactions of photosynthesis? A. oxygen B. sugar C. high-energy electrons D. ATP E. NADPH Practice #5 The overall function of the Calvin cycle is _____. A. capturing sunlight B. producing carbon dioxide C. making sugar D. oxidizing glucose E. splitting water Practice #5 The overall function of the Calvin cycle is _____. A. capturing sunlight B. producing carbon dioxide C. making sugar D. oxidizing glucose E. splitting water Practice #6 The O2 released during photosynthesis comes from A. H2O B. CO2 C. NADPH D. RuBP E. C6H12O6 Practice #6 The O2 released during photosynthesis comes from A. H2O B. CO2 C. NADPH D. RuBP E. C6H12O6 Practice #7 Which of the following enzymes is responsible for CO2 fixation in C3 plants? A. Succinate dehydrogenase B. Hexokinase C. Amylase D. DNA polymerase E. RuBP carboxylase Practice #7 Which of the following enzymes is responsible for CO2 fixation in C3 plants? A. Succinate dehydrogenase B. Hexokinase C. Amylase D. DNA polymerase E. RuBP carboxylase Practice #8 Which of the following is the process in which O2 is released as a byproduct of oxidation-reduction reactions? A. glycolysis B. Krebs cycle (citric acid cycle) C. Calvin cycle D. Light Reactions E. chemiosmosis Practice #8 Which of the following is the process in which O2 is released as a byproduct of oxidation-reduction reactions? A. glycolysis B. Krebs cycle (citric acid cycle) C. Calvin cycle D. Light Reactions E. chemiosmosis