Photosystem II: Difference between revisions
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<scene name='Photosystem_II/Chlorophyll_green/1'>Chlorophyll</scene> surround Photosystem II and capture energy from sunlight, exciting electrons. Highly conjugated, these chlorophyll absorb visible light, along with as accessory light harvesting pigments such as <scene name='Photosystem_II/Betacarotene/1'>beta carotene</scene> that can absorb at other wavelengths. | <scene name='Photosystem_II/Chlorophyll_green/1'>Chlorophyll</scene> surround Photosystem II and capture energy from sunlight, exciting electrons. Highly conjugated, these chlorophyll absorb visible light, along with as accessory light harvesting pigments such as <scene name='Photosystem_II/Betacarotene/1'>beta carotene</scene> that can absorb at other wavelengths. | ||
[[Image:Chlorophyll_a.svg.png|Chlorophyll_a.svg.png|left]]Beta carotene also protects photosystem II by destroying reactive oxygen species that result from this photoexcitation. [[Image:b-car.svg.png|b-car.svg.png]] | [[Image:Chlorophyll_a.svg.png|Chlorophyll_a.svg.png|left]]Beta carotene also protects photosystem II by destroying reactive oxygen species that result from this photoexcitation. [[Image:b-car.svg.png|b-car.svg.png]] | ||
Electrons are passed from chlorophyllto <scene name='Photosystem_II/Pheophytin_purple/3'>pheophytin</scene>. Pheophytin are very similar to chlorophyll except they contain 2 H + instead of a Mg<sup>2+</sup> ion. From the pheophytin, electrons go to | Electrons are passed from chlorophyllto <scene name='Photosystem_II/Pheophytin_purple/3'>pheophytin</scene>. Pheophytin are very similar to chlorophyll except they contain 2 H<sup>+</sup> instead of a Mg<sup>2+</sup> ion. From the pheophytin, electrons go to | ||
<scene name='Photosystem_II/Quinone_pink/2'>plastoquinones</scene>, which are reduced. These plastoquinones eventually move to a plastoquinone pool which goes to another large protein subunit, photosystem I, the next step in photosynthesis. [[Image:plastoquinone.jpg]] | <scene name='Photosystem_II/Quinone_pink/2'>plastoquinones</scene>, which are reduced. These plastoquinones eventually move to a plastoquinone pool which goes to another large protein subunit, photosystem I, the next step in photosynthesis. [[Image:plastoquinone.jpg]] | ||