| A | B |
| autotroph | organisms that make their own food |
| heterotroph | organisms that obtain energy from foods they consume |
| adenosine triphosphate | principal chemical compound used to store energy |
| ATP -> ADP + P | releases energy for cell activities |
| ADP + P -> ATP | stores energy for future cell activities |
| glucose | store 90x the energy of ATP |
| Jan van Helmont | plants gain most of their mass from intake of water |
| Joseph Priestly | using bell jar, a candle , and a plant discovers that plants release oxygen |
| Jan Ingenhousz | aquatic plants produce oxygen in the light not in the dark |
| granum | a stack of thylakoids |
| Melvin Calvin | traced pathwy by which carbon dioxide is used to form sugar |
| photosynthesis reactants | carbon dioxide and water |
| photosynthesis products | sugar and oxygen |
| pigment | substance that absorbs energy from sunlight |
| chlorophyll | main pigment of photosynthesis |
| chloroplast | organelle that carries out photosynthesis |
| absorption spectra | shows where a specific pigment absorbs light energy |
| thylakoid | saclike membranes where light dependent reactions occur |
| light-dependent reactions | capture sunlight energy and convert it to chemical energy |
| ATP and NADPH | high energy compounds formed by light-dependent reaction |
| oxygen gas | released by light-dependent reaction |
| stroma | space around the thylakoids where the light-independent reactions occur |
| light-independent reactions | use energy from ATP and NADPH to join carbon dioxide forming high energy sugars |
| 3 factors that affect photosynthesis | amount of water, light intensity, temperature |
| Calvin Cycle | dark reactions |
| NADP+ | electron and proton carrier for photosynthesis |
| ATP is an abbreviation for... | adenosine triphosphate |
| 3 | Number of phosphate groups on ATP |
| 2 | number of phosphate groups on ADP |
| xanthophyll | pale yellow pigment |
| carotenes | orange pigment |
| chlorophyll appears green because it is ___ all colors except green | absorbing |
| stomata | opening through which oxygen leaves the leaf and carbon dioxide enters |
| guard cells | controls the size of the stomata |