Biology 1225 Chapter Notes - Chapter 5: Thylakoid, Chlorophyll, Photosynthesis
9 Mar 2018
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Document Summary
Light is electromagnetic radiation, moves in waves, Distance between two successive waves is called wavelength. Light is visible to human eye only in a tiny part of spectrum of electromagnetic radiation. Our eyes see wavelengths as white light. Photosynthesis uses pigments to capture energy of visible light. Absorbing energy of appropriate wavelengths excites pigment"s electrons emitted by sun. Excited electron quickly emits its extra energy and returns to lower energy. Wavelengths that are not absorbed by pigment are reflected -> reflection gives pigment. Chlorophyll: most common photosynthesis pigment in plants and protists characteristic color. Accessory pigments harvest a wide range of additional light wavelengths , protect cells from. Use combustion pigments to maximize amount of wavelengths they receive. Change color is fall as a way to prep for dormancy. Not all forms of energy can sustain life. Folds of thylakoid membrane form stack of interconnected disks called thylakoids -> single continuous compartment.
