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SCC Bio ch. 10
photosynthesis
| Question | Answer |
|---|---|
| photosynthesis | the use of sunlight to manufacture carbs |
| what is the chemicial equation for photosynthesis? | co2+sunlight_h2o = sugars+o2 |
| describe the two types of chemical reaction in photosynthesis. | one is triggered by light and it splits water into co2. the other set [calvin cycle] uses the co2 and convert it into sugars. |
| how are the two reactions conected | they are linked by electrons produced from the splittion of wter from the first reaction. |
| pigment | molecules that absorb certine wavelengths of light. |
| what is the most common type of pigment in plants | chlorophyll |
| what color light does chlorophyll reflect? | green light |
| antenna complex | The light-harvesting complex of plants is an array of protein and chlorophyll molecules embedded in the thylakoid membrane which transfer light energy to one chlorophyll a molecule at the reaction center of a photosystem. |
| reaction center | A photosynthetic reaction centre is a complex of several proteins, pigments and other co-factors assembled together to execute the primary energy conversion reactions of photosynthesis. |
| photosystem | a biochemical mechanism in plants by which chlorophyll absorbs light energy for photosynthesis. |
| photon | a particle representing a quantum of light or other electromagnetic radiation. |
| what happens when chlorophyll absorbs photons of light? | the electron becomes "excited" and release electron to high energy state. the electron is then captured by a different electron carrier. |
| what even takes place in photosystem I | photons of light excite an electron in the reaction center, which is passed to an Electron carrier. the electron reduces NADP+ to NADPH. |
| what even takes place in photosystem II | pheiohytin transfers the electron to an electron transport chain in the thylaroid membrane, creating a proton gradient, which ultimately makes ATP. |
| photophosphorylation | The phosphorylation of ADP to form ATP using the energy of sunlight. |
| Z-scheme | electrons being passed around. |
| how are sugars formed from co2? | using the calvin cycle/carbon fixation |
| carbon fixation | the formation of sugars from co2. |
| calvin cycle | the formation of sugars from co2. |
| what are the 3 evens in calvin cycle? | 1.fixation phase 2.reduction phase 3.regeneration phase. |
| fixation phase | co2 combines with RuBP[ribulose] creating a 6 carbon molecule which is then split into two 3-PGA[3 carbon] |
| reduction phase | 3-PGA is phosphorylated by ATP and reduced by NADPH which forms G3P[3 phosphate] some G3P is used to make sugars |
| regeneration phase | the rest of the G3P is used to make[regenerate] RuBP and keep the cycle going |
| KNOW THE CYCLE | KNOW THE CYCLE |
| who loves you? | freakin EVERYONE!!! :] love youuuuuu |
Created by:
mtalbot
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