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Apr2-03, 09:17 PM
P: 324
Originally posted by Loren Booda
If you hold up a vial of chlorophyl dissolved in alcohol, its reflected light (light behind you) appears green, but its transmitted light (light behind vial) appears red! The differences between frequencies times Planck's constant must be close to the reaction energy of ATP<-->ADP?
Actually, that's not correct. The reaction centers in chloroplasts absorb two photons, at 680 and 720 nanometers. This is used to reduce water, shunt protons across a membrane, and reduce NADP+. The protons go on to produce ATP, and the NADPH drives the Kreb's cycle, which produces sugars, which can be oxidized to produce ATP. But it's a far, far way from being a 100% effecient system.