| A | B |
| diffusion | when a substance moves from high to low |
| osmosis | the movement of water |
| isotonic | a type of solution where the concentration of water is equal |
| hypertonic | a type of solution where water leaves the cell |
| hypotonic | a type of solution where water enters the cell |
| protein pumps | a type of active tramsport where a pump moves ions against the gradient |
| active transport | transport requiring energy |
| passive transport | transport not requiring energy |
| endocytosis | a large molecule pushes against the membrane and enters |
| exocytosis | a large molecule exits the cell |
| ATP | a molecule that stores a tiny amount of energy |
| glucose | a molecule that stores a huge amount of energy (around 90 times that of ATP) |
| ADP | a molecule with only two phosphate groups |
| autotroph | an organism that is capable of photosynthesizing |
| heterotroph | an organism incapable of photosynthesizing |
| photosynthesis | the process of building glucose molecules using sunlight |
| thylakoids | flat, bag-like structures inside the chloroplast |
| carbon dioxide | the gas needed for photosynthesis to occur |
| oxygen | the gas produced during photosynthesis |
| water | a liquid needed for photosynthesis to occur |
| light dependent | light is required |
| light independent | light is not required |