Biology 1001A Lecture Notes - Lecture 2: Electron Configuration, Transducin, Photon
12 Mar 2014
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Document Summary
To be used for energy or information light must be absorbed. Lecture outcomes: relationship between excited states of a pigment and its absorption, fluorescence emission spectra, region of the electromagnetic spectrum known as visible light . 400-700 nm: relationship between wavelength and energy content of a photon. Shorter the wavelength, stronger energy the wave has (inversely related) The amount of energy in the blue photon is higher than the amount of energy in the red photon: molecular characteristic of visible pigments that make them able to absorb light. This conjugated (ring) system (the alternation of double bonds and single bonds) represents or indicates the specific kind of electron configuration; these are non-bonding electrons (pi orbital electrons). Those electrons will interact with the photons of light. They are not required for bonding: relationship between pigments and associated protein. Pigments are bound non-covalently to the proteins.
