Term
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Definition
| Electron for ETC (Psystem II) and light excite electrons in pigments of the antenna complex (each pigment subsequently passes along its higher "energy state" to the next pigment, then returns to the ground state). This continues until the reaction center, a specialized chlorophyll (a) molecule, becomes "excited" and its electron is passed along to the primary acceptor. Once 2 electrons have been accepted, the ETC for Psystem I, an form NADPH (NADP+ + H+ + e- + NADP+ reductase --> NADPH) |
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Term
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Definition
| Electron for ETC (Psystem II) and light excite electrons in pigments of the antenna complex (each pigment subsequently passes along its higher "energy state" to the next pigment, then returns to the ground state). This continues until the reaction center, a specialized chlorophyll (a) molecule, becomes "excited" and its electron is passed along to the primary acceptor. Once 2 electrons have been accepted, the ETC for Psystem I, an form NADPH (NADP+ + H+ + e- + NADP+ reductase --> NADPH) |
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Term
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Definition
| Photon of light hit a pigment in an antenna complex. Electron excited to higher E state and E is transferred to the next pigment where its e- becomes excited (original returns to ground state). This process continues until the E reaches the Reaction Center (specialized Chlorphyll (a) molecule) that passes its excited e- onto the an electron acceptor. Water is split to replace the lost e-, oxygen is created as a bi-product. e- flow across the thylakoid membrane provides the E for ATP synthsis. Once the e- acceptor has 2e-s, they undergo a series of redox reactions and are moved onto Psystem I |
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Term
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Definition
1) Carbon fixation
2) Reduction
3) Regeneration of RuBP |
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Term
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Definition
| Carbon Fixation-CO2 is combined with ribulose bisphophate in a reaction catalyzed by rubisco. Yields an unstable 6carbon molecule which splits into more steriochemically favorable 2 3carbon compounds. |
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Term
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Definition
| Reduction-High E Phosphate-bonds of ATP and NADPH are split to drive the reduction of the 3carbon intermediates into Glyceraldehyde-3-Phosphate. Yields NADP+, ADP, H+, Pi needed in light reactions. |
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Term
| Phase III of Calvin Cycle |
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Definition
| Regeneration of ribulose bisphosphate (CO2 acceptor) via the splitting of a high E Phosphate-bond of ATP. |
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