| A | B |
| producer (n) | a living thing that makes its own food by photosynthesis |
| glucose (n) | a simple sugar used in respiration |
| carbon dioxide (n) | a colorless gaseous compound that plants combine with water to make glucose |
| oxygen (n) | a colorless gas that is a product of photosynthesis; a reactant in respiration |
| respiration (n) | the chemical reaction in cells that breaks down glucose to release energy |
| cell (n) | the smallest unit of a living organism |
| absorption (n) | the movement of a substance across a membrane |
| diffusion (n) | the movement of a substance from an area of higher concentration to an area of lower concentration |