| A | B |
| photosynthesis | process of using energy in sunlight to convert water and carbon dioxide into carbohydrates and oxygen; performed by green plants, algae and some bacteria |
| chloroplast | organelle in the plant cell where photosynthesis occurs |
| thylakoid | disk-like structure in a chloroplast in |
| chlorophyll | green chemical pigment found in chloroplasts that traps sunlight used for photosynthesis |
| oxygen | a waste product of photosynthesis that animals need to breathe |
| glucose | carbohydrate product of photosynthesis that provides food for the plant and nourishment for animals that eat the plant |
| autotroph | organism that makes its own food |
| heterotroph | organism that is not capable of making its own food and must feed on organic compounds produced by other organisms |
| “light reaction” of photosynthesis | during the day, light energy is captured in thylakoids and is used to make energy in the form of ATP & NADPH |
| “dark reaction” of photosynthesis – the Calvin Cycle | at night, a series of reactions that build carbohydrates using ATP, NADPH, and CO2 |