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cainivinchap6maslako
chapter 6
| Question | Answer |
|---|---|
| Autotroph | an organism that produces its own nutrients from inorganic substances or from the environment instead of consuming other organisms |
| Heterotroph | an organism that obtains food molecules by eating other organism or their byproducts and that cannot synthesize organic compounds from inorganic materials |
| Photosynthesis | the process by which plants, algae and some bacteria use sunlight CO2 and water to form carbohydrates and oxygen |
| light reaction | The first set of reactions in photosynthesis which are triggered by the absorption of light and produce NADPH and ATP to be used in the Calvin cycle. |
| Chloroplast | an organelle found in plants and algae cells that where photosynthesis occurs. |
| thylakoid | Membrane system of sacs found in chloroplasts that contains chlorophyll and are the site of the light reaction in photosynthesis. |
| stoma | one of many openings in a leaf or stem of a plant that enables gas exchange to occur. |
| Chlorophyll | a green pigment that is present in most plant cells that gives plant their characteristic green color and that reacts with sunlight CO2 and water to form carbohydrates |
| cellular respiration | the process by which cells obtain food from carbs (No - the process by which cells obtain energy from carbohydrates) |
| Carbon fixation | the synthesis of organic compounds from CO2 such as in photosynthesis. |
| Calvin cycle | A biochemical pathway of photosynthesis in which carbon dioxide is converted to the 3-carbon sugar glyceraldehyde-3-phosphate, which can ultimately be used to form glucose. |
| Stomata | Small pores usually on the underside of leaves that allow gases and water to enter or leave a plant. |
| C3 pathway | plants that use the Calvin cycle directly after the light reaction in photosynthesis to form A three carbon intermediate. |
| C4 pathway | a carbon fixation process in which carbon dioxide is bound to a compound to form A four carbon intermediate. |
| CAM pathway | a water conserving carbon fixation process CAM plants take in carbon dioxide at night and fix it into various organic compounds and releases it during the day (into the Calvin cycle). |
| Ribulose biphosphate | The 5-carbon sugar with 2 attached phosphates that bonds with CO2 for carbon fixation in the Calvin cycle |
| 3 PGA | A 3-carbon intermediate in the Calvin cycle |
| G3P Glyceraldehyde-3-phosphate | The three carbon sugar produced in the Calvin cycle and ultimately used to make carbohydrates for later use. |
| NADPH and NADP+ | the high energy and low energy forms of a compound for energy transfer in the two stages of photosynthesis. NADPH is produced in the light reaction and then used up in carbon fixation in the Calvin Cycle |
| Grade -1 for cellular respiration 19/19 |