| A | B |
|---|
| reaction of NADP+ to NADPH | reduction reaction |
| reaction of NADPH to NADP+ | oxidation reaction |
| absorption of light by a pigment results in- | oxidation of the pigment |
| Photosynthesis | Process of capturing light energy and producing high energy chemical compounds |
| Biochemical pathway | A method of studying what happens in cell functions is to follow a specific compound through a series of chemical reactions to see where it ends up and what changes it goes through. |
| Chlorophyll | green pigment in plants that absorbs wavelengths of light in the violet, blue and red ranges |
| Carotenoids | pigments found in plants that absorb green wavelengths of light |
| Photosystem 1 | The electrons are then transferred through a chain of proteins to an enzyme called NADPH synthase which uses the energy from the electron to bond NADP+ and H+ to form NADPH |
| Photosystem 2 | absorbs light energy, breaks apart H2O molecules, sends electrons down the electron transport chain which pumps hydrogen ions into the thylakoid space. |
| Electron transport chain | series of proteins that carry electrons from the photosystem to the enzymes that catalyze reactions and actively transport hydrogen ions into the thylakoid |
| Chemiosmosis | chemical reaction that produces ATP by taking advantage of the high concentration of H+ ions inside of the thylakoid. |
| ATP Synthase | allows H+ ions to diffuse through the membrane while using this movement to power the reaction of putting ADP together with P to form ATP |
| light reactions | absorption of light results in the transfer of electrons and the production of NADPH and ATP |
| photosystems | chlorophyll and carotenoids are organized in clusters to absorb light and direct electrons to electron acceptor proteins |
| Concentration gradient | hydrogen ions collect on the inside of the thylakoid due to active transport, these ions will later be used to power chemiosmosis |
