Photosynthesis

• Light Reactions (light-dependent reactions):

  • Cyclic Electron Flow produces ATP without synthesis of NADPH
  • Thylakoid provides the membrane for light reactions
• Calvin Cycle (dark/light-independent reactions):

  • 6 carbon molecules go in, and 1 glucose molecule comes out
  • The cycle turns 6 times, resulting in 36 carbon atoms
  • Produces 12 ATP, 12 NADPH, and 12 G3P
• Pigment: a molecule that absorbs visible light

  • Each pigment absorbs only light of certain wavelengths
  • When a pigment absorbs light, it absorbs the energy from the photons
• Photosynthesis: the use of light energy to synthesize carbohydrates out of carbon dioxide and water
• The Calvin Cycle is a cyclical metabolic pathway
• • In prokaryotes, the Calvin cycle occurs in the cytosol
  • In eukaryotes, the Calvin cycle occurs in the stroma
• Where do light reactions and the Calvin cycle both occur?

  Chloroplasts