Biology 1002B Study Guide - Midterm Guide: Endergonic Reaction, Light-Independent Reactions, Adenosine Triphosphate
16 May 2016
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Document Summary
Light: portion of electromagnetic spectrum that humans can detect with their eyes. Light behave like waves but is composed of a stream of energy parties called photons: wave of photons. Longer the wavelength, the lower the energy of the photons it contains. When photon of light strikes an object, it is reflected, transmitted, or absorbed. Pigments: molecules that are very efficient at absorbing photons. Conjugated system: region with alternating single and double bonded carbon atoms that cause delocalization of electrons (electrons are not associated closely with a particular atom or are involved in bonding) Most pigments absorb light at distinctly different wavelengths because they differ in the number of excited states available to the excitable electrons. A pigment"s colour is the result of the photon of light that it does not absorb (gets reflected or transmitted) Energy exists in many different forms and can be converted from one form to another.
