BIOL 1000 Chapter Notes - Chapter 1: Atp Synthase, Signal Transduction, Phytochrome
2 Jan 2014
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Light function #1: source of energy that directly or indirectly sustains organisms. Light function #2: [source of info] provides organisms with info about physical world. Ex: green alga chlamydomonas = uses light for both energy and information. Light interacts with matter, when photon hits object, photon has 3 possible fates: The longer the wavelength = the lower the energy of the photons it contains. Shorter wavelength blue = consists of photons of higher energy than red light. 380(400) - 700(750) = visible light = wavelengths we can see. Chapter 1. 1 notes: that surrounds them. between two successive peaks) wavelength = measured in nanometers (10^-9 m) Light: portion of the electromagnetic spectrum that humans can detect with their eyes. If not = photon transmitted through molecule or reflected. Eyespot: allows individual cells to gather info about location & intensity of light source (light sensor) does not generate an image---eye does that.
