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Unit 3: Photosynthesis and Cellular Respiration (Ch 9) Study Guide 1. Wn hat process converts light energy to chemical energy? ________________________________ 2. Which organelle in a plant cell carries out photosynthesis? _______________________ 3. What part of the chloroplast is the energy-trapping molecule? ___________________________ 4. Write the photosynthesis equation and label the compounds. 5. What compound is a by-product of photosynthesis? ______________________________ 6. What compound is a by-product of cellular respiration? ________________________________ 7. What process converts carbon dioxide into organic compounds? __________________ 8. What is produced in the final stage of photosynthesis? carbon called? dioxide What is this stage CALVIN CYCLE 9. How does light intensity affect the rate of photosynthesis? As sunlight increases, the rate of photosynthesis increases until total light distribution is reached. 10. How does temperature affect photosynthesis? 11. Why do cells need to store energy? to Slows down the process perform a life sustaining processes in living organisms like homeostasis, growth & repair, reproduction etc. 12. Where does most of the energy on Earth come from? _SUN 13. What happens during glycolysis? A molecule of glucose is split 14. Where does glycolysis occur in the cell? Cytoplasm 15. How many ATP molecules are gained during glycolysis? _______2_____________________ 16. Cellular respiration occurs in which organelle? _____ MITOCHONDRIA 17. Why is fermentation important? Fermentation allows glycolysis to continue even though there’s no oxygen (O2) aka ANAEROBIC condition. 18. When we exercise, what causes soreness in our muscles? ______________________________ 19. Can plants perform cellular respiration? If so, why might this be useful? 20. What happens during cellular respiration? Make sure to describe the two stages. a) Aerobic: Glycolysis & Kreb’s cycle/electron transport chain b) Anaerobic: Glycolysis & Lactate Formation or Alcohol Fermentation 21. What molecule stores energy in our cells? _ATP______ 22. What 3 parts make up ATP? 3 phosphate groups, Nitrogenous base, & Sugar 23. Which molecule provides energy for the cell? _______ATP_____ 24. What compound/element helps cells produce ATP most efficiently? __ 25. Which process produces the most ATP? O2____ AEROBIC (aka in the presence of oxygen) 26. Write the cellular respiration equation and label the compounds. 27. What is the difference between an autotroph(make their own food) and a heterotroph must consume other organism for food. 28. Draw a chloroplast and label the parts. 29. Why is chlorophyll green? It reflects green wavelengths of light 30. What are the three pigments that can be present in a plant’s cells? chlorophyll , chlorophyll , and carotenoids 31. Would you expect to find more chloroplasts in the leaves or roots of plants? Explain. ADD THE FOLLOWING FOR TEST PREP 32. When cells break down food molecules energy is ____stored temporary as ATP molecules.____