BIOL 1000 Study Guide - Electromagnetic Spectrum, Haloarchaea, Photon
Document Summary
* comes in form of a wave variable wavelength (distance between 2 peaks) and energy: typically measured in nanometers (10 m) Wavelength and energy inversely related: shorter wavelength = high energy (red) ex: gemma rays, x-rays longer wavelength = lower energy (purple) ex: radiowaves, microwaves photon: * packet of energy with no mass. The portion of the electromagnetic spectrum that humans can detect with their eyes. Molecules that can absorb photons of light. Shape: - all have a region where carbons are linked by single / double bonds conjugated system of delocalized electrons. Capture photons which can be used to do work / reflect a certain color (a pigment"s color is the result of light that it does not absorb) The most common kind is rhodopsin = opsin (membrane protein) + retinal (pigment molecule) Absorption of photon light causes the retinal molecule to change shape.
