BIOL 1050 Lecture Notes - Lecture 3: Light-Harvesting Complex, Plastoquinone, C3 Carbon Fixation
3 Dec 2017
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Document Summary
Protein kinases and phosphatases: regulate enzyme, kinase, transfer of phosphate from atp to a hydroxyl group on a protein, changes function of the protein, phosphatase, removal of a phosphate from protein by hydrolysis. Photosystem energy balancing: the light harvesting complex (lhc) is moved. In a greenhouse setting -> plants actively growing -> low co2 -> must pump in co2: c3 pathway is in all plants. C4 carbon fixation: an addition to the c3 pathway, avoids photorespiration, requires additional atp. C3 vs. c4 photosynthesis: c4 has an advantage over c3 under, higher temperature, certain max temperature -> then efficiency decrease due to the high temperature causing the proteins to denature, lower co2, graph. What are the trends: co2 increasing, temperature, water. Co2 trends: increasing 1. 6-2. 7 l-1 y-1 (ppm: graph, measuring the trend of the increase of carbon dioxide, average is increasing 2ppm/ year -> constant increase, specific data points show a fluctuation in co2 during the seasons.
