| light dependency -
09-09-2007, 02:47 PM
The light dependent reaction of photosynthesis requires the presence of energy photons, for example, sunlight or any other light source. These energies are then absorbed by photosynthetic pigments called chlorophyll and the result is the photolysis of water: 2H2O ® 4H+ + 4e- + O2. These electrons (4e-) then go thru a transport chain, losing energy along the way, converting ADP to ATP (reverse that of Calvin cycle) by photophosphorylation. Together with positive ions (4H+) reduce nicotinamide adenine dinucleotide phosphate ions (NADP+) by the reaction: 2H+ + 2e- + NADP+ ® NADPH + H+. Both ATP and NADPH are needed for the next step of light independent reaction of photosynthesis. Although the NADPH went thru a Krebs cycle too complex to describe, both with Calvin cycle are dependent on the movement of plasma (4th state of matter) in forms approximately of equal number of positive (H+) and negative (e-) ions with their elastic, inelastic, and cyclic collisions. All these discussions (see other posts) seem to uncover the common connection between biosynthesis, photosynthesis, and nucleosynthesis. It is the active role played by the phenomenon of plasma transport with necessary intermediate steps, exhibiting fusion-fission or fission-fusion interactions at varying hierarchical levels – nuclear, molecular, and stellar. Without it the universe cannot possibly exist. QED: Quod Erat Demonstrandum or Quantum ElectroDynamics whichever fancy one chooses. Krebs, Sir Hans Adolf (1900-81) was German-born British biochemist who emigrated in 1933 working at Sheffield University then Oxford in 1954, best known for his biosynthesis cycle (1937). Its details were added by Fritz Lipmann (1899-1986). Both shared the 1953 Nobel Prize for Medicine. Time independence: [∂E(g)]²=[∂F(a)×∂r(a)]·[∂F(b)×∂r(b)] and Mass independence: ¶a(t)·¶r(t)=c² |