Photosynthesis

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Photosynthesis

  1. 1. Photosynthesis is the synthesis of glucose from CO2 and water in the presence of sunlight and chlorophyll.
  2. 2. The Basic Requirements of Photosynthesis and Its General Reactions Chlorophyll Carbon dioxide + water chlorophyll sugar oxygen
  3. 3. 6 CO6 CO22 + 6 H+ 6 H22O + light energy → CO + light energy → C66HH1212OO66 + 6 O+ 6 O22 Water is absorbed by roots and roots hair through osmosis & then transported leaves through xylem vessels.
  4. 4. Parts of a Chloroplast outer membrane inner membrane stroma thylakoid granum
  5. 5. Light Chloroplast Light reactions Calvin cycle NADP+ ADP + P
  6. 6. 2 H+ + 1 /2 Water-splitting photosystem Reaction- center chlorophyll Light Primary electron acceptor Energy to make Electron transport chain Primary electron acceptor Primary electron acceptor NADPH-producing photosystem Light NADP+ 1 2 3 PHOTOLYSISPHOTOLYSIS Z - Scheme
  7. 7. Calvin Cycle
  8. 8. CO2 6C 3C 3C 5C ATP NADPH Glucose CALVIN CYCLE
  9. 9. Products and substrates of Light and Dark reactions Substrate Energy source Products Location Light reactions H2O light NADPH ATP Thylakoids Dark reactions CO2 NADPH ATP Carbo- hydrates Stroma Relating the Light and Dark Reactions
  10. 10. The light reaction Sunlight is absorbed in the thylakoid membranes. e- High-energy electron are produced. ADP NADP+ Some e+ are passed to NADPH+ converting to NADPH. ATP NADPH Dark reaction CO2 H2O glucose NADP+ ADP

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