BIOL 102 Lecture Notes - Lecture 15: Light-Harvesting Complex, Intermembrane Space, Photosystem Ii
30 Aug 2016
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Document Summary
Chloroplast anatomy: outer and inner membrane, intermembrane space, thlakoid membrane contains pigment molcecules, enclose thylakoid lumen, granum stack of thylakoids, stroma fluid filled region between thylakoid membrane and inner membrane space. Trophic organization: heterotroph: must consume organic molecules from their environment to sustain life, autotroph: make organic molecules from inorganic sourses. Photoautotroph: use light as a source of energy. Energy within light is captures and uses to synthesize carbohydrates. Co2 + h2o + light energy c2h12o6 + o2. H2o is oxidated (provides h+ and e-) Energy from light drives this endergonic rxn photosynthetic pigments absorb some light energy and reflect others: Leaves are green because they reflect green wavelengths absorption boots e- to higher energy levels. Wavelengths of a pigment absorbs depends on the amount of energy needed to move an e- to a higher orbital. 2 stages of photosynthesis: light reactions: Produce atp and nadph: calvin cycle (carbon fixation):
