• Photosynthesis Vs Cellular Respiration
  
  
  Similarities
  ·         ATP is a key molecule in each
  ·         They both occur in organelles
  ·         G-3-P is formed in both processes- In Glycolysis (cell respiration) and in Calvin cycle (photosynthesis)
  ·         Both rely on movement of electrons for operation
  ·         Both use electron transport chains in production of ATP
  ·         Both use chemiosmosis to generate ATP
  
  
  
  
  Differences
  
  
  Photosynthesis
  • Needs light
  • Uses energy
  • Happens in the chloroplast
  • Reactants: Water + Carbon Dioxide
  • Products: Glucose + Oxygen
  • Processes: The light dependent reaction and  light independent reaction.
  • ATP Synthase: H+ gradient across thylakoid membrane into stroma. High H+ concentration in the thylakoid lumen
  • Final electron acceptor: oxygen
  • Electron source: Glucose, NADH+, FADH2
  VS
  
  
  Cellular Respiration
  • Does not need light
  • Produces energy
  • Happens in the mitochondria
  • Reactants: Glucose + Oxygen
  • Products: Water + Carbon Dioxide
  • Processes: Glycolysis: breaking down of sugars, Krebs Cycle: occurs in mitochondria; requires energy, Electron Transport Chain: converts O2 to water.
  • ATP Synthase: H+ proton gradient across the inner mitochondria membrane into matrix. High H+ concentration in the intermembrane space.
  • Final Electron acceptor: NADP+ (forms NADPH )
  • Electron Source: Oxidation H2O at PSII
  • Produces a net yield of 36 ATP