Basic Biology Chapter 7
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italiannmf24 on October 24, 2011
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14 terms
Terms | Definitions |
|---|---|
 Chloroplast | Absorbs sunlight and uses it to power the synthesis of organic food molecules. |
| Stroma | A thick fluid contained in chloroplast's inner membrane. |
| Chlorophyll | A light-absorbing pigment in the chloroplasts that plays a central role in converting solar energy into chemical energy. |
| Thylakoids | Suspended in the stroma, interconnected membraneous sacs. |
| Grana | Thylakoids are concentrated in stacks called this. |
| Light Reactions | Chlorophyll in the thylakoid membranes absorbs solar energy. |
| NADPH | An electron carrier. |
| Calvin Cycle | Uses the products of the light reactions to power the production of sugar from carbon dioxide. |
| Wavelength | The distance between the crests of two adjacent waves. |
| Electromagnetic Spectrum | The full range of radiation, from the very short lengths of gamma rays to the very long wavelengths of gamma rays. |
| Chlorophyll a | Absorbs mainly blue-violet and red light. |
| Photon | A fixed quantity of light energy. |
| Photosystem | A cluster of a few hundred pigment molecules, including chlorophll a and b and some carotenoids. |
| Reaction Center | Consists of a chlorophyll a molecule that sits next to another molecule called a primary electron acceptor. |
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