Biology 1002B Lecture Notes - Lecture 2: Rhodopsin, Electromagnetic Spectrum, Photon
15 Apr 2013
School
Department
Course
Professor
Document Summary
Decay back to ground state through loss of heat. Loss a little as heat/energy and loss the rest as fluorescence (deep red, shift to a slighter longer wavelength because it lost a little bit of heat) Energy transfer: there is more fluorescence is more in the extracted chlorophyll compared to the not extracted chlorophyll. Chlorophyll has no green excited state cannot absorb the green photon, The energy of the photon must match the energy of the pigment, if it does not match perfectly, it will not absorb it. Occurs in the photosystem (unit of photochemistry) It has an antenna, it is very important for photosynthesis: electrons don"t move, only the energy moves, and the pigments are very close to each other, not changing the chlorophyll. Chl^+ + chl -> chl + chl^+ Oxidation of chloropyll releases electrons: chl* -> chl^+ + e- Draw the ground state and lowest excited state of four pigment molecules.
