BI110 Lecture Notes - Stoma, Sister Chromatids, Catabolism
Document Summary
Converts matter into energy (in the form of electromagnetic radiation) Gamma, x-ray, ultraviolet, near-infrared, infrared, microwaves, radio waves. Shorter the wave length, the higher the energy. Visible light 400-700nm blue shorter, red long. Electromagnetic radiation that humans can detect with their eyes. Wave length distance between two successive peaks. For light energy to be used, must be absorbed/interact by molecules called pigments. Light interacting with matter some wave lengths are absorbed by pigments, some are reflected, others go straight through. Typically green light is reflected off which why plants appear green is. If you try to grow a plant with only green wave lengths the plant will not grow. All have alternating double and single bonds between carbons. It is the electron that absorbs the light, so the electron is delocalized and able to absorb, not held close to molecule. Pigments are differentiated because they all absorb different wave lengths of light.
