BIOSC 1000 Lecture Notes - Lecture 15: Photophosphorylation, Photosynthesis, Rubisco
12 Apr 2019
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Inner: highly permeable, semi permeable, mg2+ and cl , thylakoid, most of photosynthetic machinery is here, highly permeable, the membranes divide the chloroplast into three compartments. Grana: thylakoids are flattened sacs in stroma surrounded by thylakoid, stacks of thylakoid sacs, connected by unstacked thylakoid membranes called, all electron capture, energy transforming proteins are located in stromal lamellae thylakoid membranes, pigments: light absorbing molecules. Chlorophyll a & b: absorbs blues and reds, greens are not, bc they"re reflected, you see green plants orbitals. Excited electrons decay to ground sate: discrete packets (quanta) of energy (hv, dissipate energy as heat fluorescence, can transfer energy to nearby molecule, energy from an excited electron can excite an electron in an adjacent pigment or be transferred to an electron acceptor. Not making any oxygen: bc skipping psii all together, oxidative phosphorylation vs. photophosphorylation, the calvin cycle uses chemical energy from the light reactions (atp and nadph) to convert co2 into carbohydrates, calvin cycle: 3 stages.
