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bio 9.1-9.3
photosynthesis
| Question | Answer |
|---|---|
| energy | the ability to do work |
| autotrophs | obtain energy from the sun |
| heterotrophs | obtain energy from consuming other organisms |
| ATP | the basic energy source for all cells |
| photosynthesis | plants convert the energy of sunlight into chemical energy stored in the bonds of carbohydrates |
| pigments | light absorbing compounds |
| visible light spectrum | the portion of the electromagnetic spectrum visible to human eyes |
| light dependent reactions | uses sunlight to convert ADP and NADP+ into the energy and electron carriers ATP and NADPH |
| photosystem II | absorbs light and energy and produces high energy electrons |
| photosystem I | electrons are reenergized |
| Calvin | american scientist who created the calvin cycle |
| carboxylation | the first step in the calvin cycle where RUBISCO combines with CO2 and RUBP and forms 3 phosphoglycerate |
| reduction | the second step in the calvin cycle; ATP becomes ADP+P and NADPH becomes NADP+ |
| regeneration | the remaining molecules become RUBP again by using ATP |
| light intensity | increases photosynthesis rate but it stops it at some point |
| stomata | little gates that open and close to let water and CO2 enter and stay in |
| C3 | 3 carbon sugar during photosynthesis |
| C4 | C4 4 carbon sugar during potosynthesis |
| troph | how an organism obtains energy |
| autotrophs | get energy by using photosynthesis |
| heterotrophs | get energy from plants and animals |
| atp | adenosine triphosphate |
| atp | contains 3 phosphates, 1 ribose, and 1 adenine |
| adp | adenosine diphosphate |
| Chlorophyll | the main pigment |
| light reactions | takes place in the thylakoid membranes, sunlight is an enerygy source, third phosphate in ADP to make ATP, NADP+ to make NADPH |
| dark reactions | takes place in the thylakoid membrane and uses CO2+ATP+NADPH |
| water | where new electrons come from |
| photosystem II | absorbs light and energy and produces high energy electrons. splits water molecules and releases H+ ions and oxygen |
| photosystem I | electrons are reenergized. the 2nd electron transport chain transfers electrons to NADP+, producing NADPH |
| hydrogen ions | what cannot pass directly across the membrane? What has to use atp synthase? |
| H+ movement | allows the synthesis of NADPH |
| light temperature water | factors that effect photosynthesis |
| C3 plants | rice beans soybeans cotton spinach |
| C4 plants | corn sugar cane crabgrass |
| CAM plants | pineapple cacti succulents |
Created by:
jaida0
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