| 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 |
| Julius Mayer | plants convert light energy into chemical energy |
| 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 |
| photosystem II | absorbs light energy and splits water into H ions and oxygen gas |
| photosystem I | absorbs sunlight and forms NADPH |
| ATP synthase | forms ATP as H ions leave thylakoids |
| granum | a stack of thylakoids |
| 3 factors that affect photosynthesis | amount of water, light intensity, temperature |
