| A | B |
| autotroph | organisms such as plants which make their own food |
| heterotroph | organisms such as animals that cannot use the sun's energy directly |
| ATP | living things use this "cash" for cellular energy |
| photosynthesis | plants transform energy of sunlight into glucose |
| pigment | any light absorbing molecule that gathers the sun's energy |
| chlorophyll | the principal pigment of photosynthetic organisms |
| thylakoid | discs within chloroplasts that contain photosystems |
| stroma | fluid in chloroplasts, where light independent reactions occur |
| NADP+ | (nicotinamide adenine dinucleotide phosphate) one of the carrier molecules that transfers high-energy electrons from chlorophyll to other molecules |
| light-dependent reactions | reactions of photosynthesis that use energy from light to produce ATP and NADPH |
| ATP synthase | an enzyme that catalyzes the reaction ADP + P -->ATP |
| Calvin cycle | uses CO2 and ATP/NADPH energy to synthesize glucose |
| red and blue | wavelengths of light that are absorbed by chlorophyll |
| green | wavelength of light that is reflected |
| thylakoid membranes | where light dependent reactions occur |
| electron transport chain | Used in stage 1 to transform ADP into ATP |
| chloroplast | organelles where photosynthesis takes place |
| glucose | the final product of photosynthesis; the energy "check" |
| third phosphate group | energy-containing bond of ATP |
| six carbon dioxide molecules | needed to make one glucose molecule |
| light intensity & amount of CO2 | factos that affect the rate of photosynthesis |
| "white" light | contains all wavelengths (colors) |
| stomata | where CO2 enters a leaf |
| roots | how water usually enters a plant |