Topic 2.9 Photosynthesis

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Across
  1. 2. The production of high energy carbon compounds in cells using light energy. (14)
  2. 3. A graph that profiles the relative effectiveness of different wavelengths of radiation in photosynthesis (6, 8)
  3. 4. _________ acid: A very weak acid formed in solution when carbon dioxide dissolves in water - allows photosynthesis to be measured by a change in pH (8)
  4. 8. The distance between peaks of a wave of light, which determines its colour (10)
  5. 12. ___________ factor: An environmental factor, such as carbon dioxide or light intensity, that controls the process of photosynthesis. (8)
  6. 15. Main photosynthetic pigment of green plants (11, 1)
  7. 17. Method to measure CO2 in a gas sample due to absorption of IR radiation by CO2 (8, 3, 8)
Down
  1. 1. A graph plotting a pigment's light absorption versus wavelength (10, 8)
  2. 5. One billionth (10-9) of a metre. (9)
  3. 6. Waste product of photosynthesis (6)
  4. 7. Chemical decomposition of water induced by light. (10)
  5. 9. ____________ Pigments: Pigments that indirectly enhance photosynthesis by absorbing specific wavelengths of light and transferring this energy to chlorophyll molecules that are directly involved (9)
  6. 10. Main product of photosynthesis (7)
  7. 11. A graph which shows relationship between net photosynthesis with variation in PAR intensity (5, 8, 5)
  8. 13. A method of separating and identifying the components of a complex mixture by differential movement through a two-phase system. (14)
  9. 14. Cell organelle that is the site of photosynthesis. (11)
  10. 16. Wavelengths of light that photosynthetic organisms use as a source of energy 400 - 700 nm (3)