Across
- 3. an organelle found in plant and algae cells where photosynthesis occurs
- 6. an organism that makes its own food
- 8. a chemical substance that is present at the start of a chemical reaction
- 9. process by which plants and some other organisms use light energy to convert water and carbon dioxide into oxygen and high-energy carbohydrates such as sugars and starches
Down
- 1. a chemical substance formed as a result of a chemical reaction
- 2. adenosine triphosphate, an organic molecule that acts as the main energy source for cell processes.
- 4. sugar, manufactured during photosynthesis, main source of energy for plants and animals, metabolized during cellular respiration
- 5. the small openings on the undersides of most leaves through which oxygen and carbon dioxide can move
- 7. an organism that cannot make its own food