Across
- 1. the organic molecule that acts as the main energy source for cell processes.
- 3. an organism that makes its own food
- 4. a chemical substance formed as a result of a chemical reaction
- 6. small opening on the underside of most leaves through which oxygen and carbon dioxide can move
- 8. a chemical substance that is present at the start of a chemical reaction
Down
- 2. process that uses light energy to convert water and carbon dioxide into oxygen and high-energy carbohydrates such as sugars and starches
- 5. an organelle where photosynthesis occurs
- 7. an organism that cannot make its own food