Photosynthesis

这是一篇关于Photosynthesis的思维导图，Light reaction，Dark reaction

Photosynthesis

• Factors affecting
  • Environmental factors
    • light
      • Energy source of photosynthesis: chloroplast development and chlorophyll synthesis
      • Required: Regulation of carbon assimilating enzyme activity: regulation of stomatal opening and closing
    • CO2
      • the main raw material and limiting factor of photosynthesis
    • moisture
      • One of the photosynthetic raw materials, mainly indirectly affecting photosynthesis
      • Influence stomatal opening and closing (stomatal factor): influence chloroplast photosynthetic activity, leaf growth (photosynthetic area): photosynthate transport
    • temperature
      • It affects the activity of carbon assimilation enzyme system,CO2 diffusion and respiratory consumption, and there exists a "three basis point" phenomenon
    • Mineral elements
  • Internal factors a type, growth period, leaf age, leaf position
• Formula
  • 6CO +6H O(light chloroplast) CH O [(CH O)]+6O2
  • Carbon dioxide + water = light (condition) chloroplast (site) organic matter (stored energy)+ oxygen
• Defination
  • Plants use the sun's energy to convert water and carbon dioxide into sugars
• Dark reaction
  • Light reaction generates NADPH and ATP to carry out carbon assimilation and reduce carbon dioxide to sugar. Because this stage basically does not depend on light directly, but only on the supply of NADPH and ATP, it is called the dark reaction stage
  • • https://byjus.com/biology/light-reaction-vs-dark-reaction/
  • Reaction process
    • place
      • Chloroplast matrix reaction
    • reaction
      • CO2 of fixed
      • Reduction of three carbon compounds
    • conditions
      • No need for light, important variety, ATP, [H]
    • product
      • (CH20)、ADP、Pi
    • energy
      • Transform the active chemical energy in ATP -- > Stable chemical energy in organic matter
• Light reaction
  • Electrons released by oxidation of the water molecule are transferred to NADP+ through an electron transport system similar to the mitochondrial respiratory electron transport chain, reducing it to NADPH. Another consequence of electron transport is that protons from the stroma are pumped into the thylakoid lumen, where a transmembrane proton gradient drives ADP phosphorylation to ATP.
  • • https://www.britannica.com/summary/photosynthesis
  • Reaction process
    • place
      • Light reactions occur in the thylakoid membrane of chloroplasts.
    • reaction
      • The photolysis of water
      • The synthesis of ATP
    • conditions
      • Light, pigment, south
    • product
      • [H], 02. ATP
    • energy
      • Turn light
        • Active chemical energy in ATP
• The light reaction product [H] is the reducing agent of CO2 in the dark reaction,ATP provides energy for the dark reaction, and ADP and Pi generated by the dark reaction provide raw materials for the formation of ATP in the light reaction