| A | B |
|---|
| Autotroph | Organisms that can capture energy from sunlight or chemicals and use it to produce its own food from inorganic compounds. |
| Heterotroph | Organisms that obtains energy from the foods it consumes. |
| Adenosine Triphosphate (ATP) | A principle compound that cells use to store and release energy. |
| Photosynthesis | The process in which the energy of sunlight converts water and carbon dioxide to high energy carbohydrates. |
| Pigment | Light absorbing molecules. |
| Chlorophyll | The principal pigment of plants. |
| Thylakoid | Saclike photosynthetic membranes in chloroplasts. |
| Photosystem | Clusters made of chlorophyll and other pigment clusters. |
| Stroma | The region outside the thylakoid membranes. |
| NADP+ | A carrier molecule that accepts and holds 2 high energy electrons along with a hydrogen ion. |
| Light-Dependent Reactions | Reactions that require light. |
| ATP Synthase | A protein that spans the membrane and allows H+ ions to pass through it. |
| Calvin Cycle | A process in which plants use the energy that ATP and NADPH contain to build high energy compounds that can be stored for a long time. |
