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Photosynthesis Questions

Photosynthesis Questions. The type of tightly packed plant cells that are able to photosynthesize. Palisade parenchyma. When guard cells do this, they close. Guard cells close when they loose water. Guard cells form an opening in the lower epidermis called what?. Stomates.

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Photosynthesis Questions

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  1. PhotosynthesisQuestions

  2. The type of tightly packed plant cells that are able to photosynthesize.

  3. Palisade parenchyma

  4. When guard cells do this, they close.

  5. Guard cells close when they loose water.

  6. Guard cells form an opening in the lower epidermis called what?

  7. Stomates

  8. Does a photosystem contain more than one pigment?

  9. Yes, it contains molecules of various pigments such as, carotenoids, chlorophyl a and b.

  10. What is photolysis?

  11. When water is split in photosystem II to replace electrons.

  12. What happens at the p6f complex in photosystem II?

  13. H+ ions are pumped into the thylacoid and they diffuse out through ATP Synthase to form ATP.

  14. What are plastoquinone and plastocyanin?

  15. Proteins in the thylacoid membrane that transfer the electrons.

  16. What do plants do when there is not enough NADP molecules to accept electron?

  17. They perform Cyclic photophosphorylation where the electrons excited at p700 (photosystem I) return to p700 after transferring from several membrane proteins.

  18. What is the enzyme that fixes carbon from CO2 to form PGA?

  19. Rubisco or RuBP carboxylase

  20. When PGA is converted to G3P which goes on to form organic molecules and more RuBP, it is the ________pathway?

  21. C3 pathway

  22. The pathway where plants first incorporate CO2 with PEP to form oxaloacetate and the glucose. Why do plants use this pathway?

  23. C4 Pathway (Hot, dry climates Take advantage of intense sunlight Ex. Sugar cane and corn)

  24. Where does the Calvin cycle occur?

  25. Stroma

  26. The waxy covering of leaves

  27. Cuticle

  28. Why are plants green?

  29. Green is the light they reflect.

  30. What is an absorption spectrum?

  31. A graph showing wavelength vs absorbance of a particular substance. From the data it can be determined what specific wavelength is absorbed.

  32. What is a “blank” needed to obtain accurate readings with a spectrophotometer?

  33. A Blank has all of the buffer, dilutants, and or solvents used in a sample and not what is being tested.

  34. What is an Rf value for a pigment?

  35. The reference front or the distance the pigment migrated divided by the distance the solvent front moved.

  36. Why was a flask of water places between the samples and the lamp in the lab?

  37. To act as a heat sink….so heat would not have an effect on the results.

  38. According to the lab, what would it indicate if the O.D. of a tube was .67 at time “O” and .65 at time “5”

  39. It would indicate that no photosynthesis occurred in the sample.

  40. What is TLC?

  41. Thin layer chromotography

  42. Respiration Questions

  43. In Glycolysis, Glucose in broken down into what?

  44. 2 Pyruvic acid molecules (pyruvate)

  45. Which steps of respiration form ATP?

  46. Glycolysis Kreb’s cycle Electron Transport Chain (Oxidative phosphorylation)

  47. Where does glycolysis occur?

  48. The cytoplasm

  49. Is glycolysis anaerobic?

  50. Yes, glycolysis does not require oxygen. This occurs in both aerobic and anaerobic respiration.

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