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PHOTOSYNTHESIS
biology II-12
| Term | Definition |
|---|---|
| Light Dependent Reaction | Chlorophyll molecules in photosystems that captures light energy and transfers the energy to ATP and carrier molecules |
| Light Independent Reaction | Reactions to build carbohydrates from carbon dioxide and water using energy captured during the light dependent reactions |
| Calvin Cycle | Another name for light independent reactions |
| Chloroplast | Organelle in plants where photosynthesis occurs |
| Thylakoid | Stacks of membrane bags in chloroplasts where chlorophyll is embedded; site of light reaction |
| Stroma | Fluid surrounding thylakoids; site of light independent reaction |
| Photosystem | Collection of light capturing molecules found in thylakoids |
| Chlorophyll | Main light capturing molecule for photosynthesis; reflects green wavelengths |
| Carrier Molecules | Special molecules capable of moving high energy electrons around the cell |
| Heterotrophs (hetero= other, troph= nutrition) | Organisms that obtain energy by eating other organisms or their products |
| Photosynthesis (photo= light, syn= join) | Series of chemical reactions that use light energy to convert water and carbon dioxide into high energy carbohydrates, autotrophs only |
| Cell Respiration | Chemical reactions to transfer energy stored in sugars and other food to ATP; releases carbon dioxide |
| ATP (adenosine TRIphosphate) | Temporary high energy molecule for cell fuel with three phoshates |
| ADP (adenosine diphophate) | Stable lower energy molecule with two phosphates; is converted to ATP |