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Ch. 6 Photosynthesis
| Question | Answer |
|---|---|
| ATP | Stores energy Releases energy when phosphate group is removed |
| Light dependent reactions prodcuts | ATP, NADPH, O2 |
| Light independent reaction products | Organic matter (carbohydrates, lipid proteins, ADP, NADP+) mainly glucose ADP, NADP+ |
| Photosynthesis | Uses sunlight to convert water & carbon dioxide into oxygen & high energy sugars 6CO2 + 12H2O----light energy----C6H12O6 + 6O2 + 6H2O |
| Pigments | Molecules that absorb solar energy necessary for photosynthesis chlorophyll “a” gets the reaction started. ex. chlorophyll |
| Stroma | Space that surrounds the thylakoids Also surrounds grana |
| Beginning step of photosynthesis | Pigments in Photosystem II absorb light |
| Calvin Cycle and dark reactions | another name fro light independent reaction |
| Chlorophyll a reaction to light being absorbed | Electrons become excited |
| Autotroph | Makes own food/energy |
| Heterotroph | Eat other things for food/energy |
| Granum (grana) | Stacks of thylakoids Contains chlorophyll |
| Photosystem I | Unit where solar energy is absorbed and higher energy electrons are formed. I Generates ATP II Generates NADPH |
| NADP+ | NADP+ molecules accepts electrons and H+ during photosystem to form NADPH |
| NADPH | Carries hydrogen to Calvin Cycle and turns into NADP+ |
| Chloroplasts | Where photosynthesis happens |
| Thylakoids | Membranes in chloroplast Photosynthetic membrane |
| chemiosmosis | Process that relies on concentration gradient of protons Whole process of ATP synthase |
| ATP synthase | Allows H+ ions to pass through the thylakoid membrane out of the thylakoids. Protein carrier that harnesses energy from concentration gradient of H+ to make ATP by adding a phosphate to ADP |
| Carbon fixation | Incorporation of carbon dioxide into organic compounds Carbon dioxide comes from atoms. in as gas thru calvin cycle it joins w/ RUBP to make PGAL |
| ROY G BIV | Colors of rainbow Red longest wave Violet shortest wave |
| Ribose | 5-carbon sugar |
| Light independent reactions (what happens) | CO2 enters 4rm atmosphere&combines w/carbon there already ATP&NADPH give new carbon molecules energy(ATP becomes ADP NADPH becomes NADP+ both go back to light reaction cycle repeats)Produce sugars,lipids,amino acids. Left over carbon goes thru cycle again |
| Light dependent reactions (what happens) | Sunlight hits chlorop energy knocks electrons 4rm chlorop get passed2ETC. H2O molecules split2replace electrons lost 4rm chloro. (in form of Hydr) Oxy 4rm H2O is released. Hydr atoms 4rm H2O r picked up by NADP+ becomes NADPH carries hydrogen to Calvin C |
| Why are Chloroplasts green? | Chlorophyll absorbs other wavelengths like red and blue, but reflects green wavelenghts of light. |
| Chemical equation for photosynthesis | 6CO2 + 12H2O → 6O2 + C6H2O6 + 6H2O |
| Light independent reaction reactants | CO2, ATP, NADPH, RuBP |
| Light independent reaction location | stroma |
| Light dependent reaction reactants | Sunlight, H2O, ADP, NADP+ |
| Light dependent reaction location | Thylakoid Membrane |
| photons | Packet of solar energy |
| electrons/ electron transport chain | 2 electrons are excited in chlrophyll “a” the passage of electrons along series of carrier proteins from higher to lower energy. |
Created by:
RisaS
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