Rev Photosynthesis

Chapter 7

  1. What is photosynthesis? What does Photosynthesis do – in one sentence?

  2. What is the equation for Photosynthesis?

  3. What are autotrophs

  4. Why is the use of O2 in cellular respiration useful to living organisms?

  5. Define Anaerobes, Aerobes, Cellular respiration

  6. Why do plants have Flat leaves with lots of leaf area?

  7. Describe the Epidermis, cuticle. Where are they found?

  8. What is the Stomata, Vascular bundles, Mesophyll cells, Chloroplasts, Stroma, Thylakoids, Grana, Chlorophyll,

  9. What are the two main sets of reactions in Photosynthesis? Where does each occur?

  10. Describe the Light Dependent Rxn, and Light Independent rxn.

  11. What are the energy carrier molecules?

  12. Describe the light harvesting complex.

  13. Describe the electromagnetic radiation spectrum.

  14. The photons that make up visible light are found in what part of the spectrum? How is wavelength tied to the photons?

  15. What happens to light that strikes the leaf?

  16. What are Accessory pigments? What wavelengths do they absorb? How does this ‘help’ chlorophyll?

  17. What are the two parts of the Light Harvesting complex.

  18. What are Antennae molecules, Excited Electrons, the Reaction Center, the e-trx system

  19. How do these ‘harvest’ light?

  20. Which one occurs first? Which supports the other? Are they light dependent or light independent?

  21. What has to be present in order for these rxns to occur? What is the product of each?

  22. Why is splitting H2O important for this reaction?

  23. Where does the O2 that we breath come from?

  24. What is O2 used for in living cells?

  25. What are the products of the Light Independent rxns? Where do the light independent rxns occur?

  26. What is required for them to occur?

  27. Diagram the equations for the Light Independent rxns.

  28. What is the Calvin-benson or C3 pathway?

  29. What is RuBP? RuBP carboxylase?

  30. What is carbon-fixation? G3P? PGA? How is the energy in these rxns controlled?

  31. Describe Evapotranspiration. Stomata, Photorespiration:

  32. Why is photorespiration bad for the plant? Why is it ‘good’?

  33. Describe the C4 pathway:. How does it differ from the C3 pathway? Where are chloroplasts found in each pathway? What are the enzymes and carriers used in each pathway?

  34. What is PEP, Phosphoenolpyruvate, Oxaloacetate

  35. Compare and contrast C4 and C3 pathways:

  36. C4 plants C3

  37. use 5 ATP use 3 ATP

  38. hot dry, high light moist, lower light

  39. deserts, tropical grasslands temperate grasslands.