Across
- 2. organisms that can make their own food.
- 4. a colorless, odorless reactive gas and is the life-supporting component of the air.
- 5. what cells do to break up sugars into a form that the cell can use as energy, this happens in all living organisms.
- 8. a biochemical mechanism in plants by which chlorophyll absorbs light energy for photosynthesis.
- 11. a colorless, odorless gas produced by burning carbon and organic compounds and by respiration.
- 12. A form of cellular respiration that occurs when oxygen is absent or scarce.
Down
- 1. a green pigment, present in all green plants and in cyanobacteria, responsible for the absorption of light to provide energy for photosynthesis.
- 3. organisms that cannot produce their own food and depend on other organisms to eat.
- 6. the process by which green plants and some other organisms use sunlight to synthesize foods from carbon dioxide and water.
- 7. the sequence of reactions by which most living cells generate energy during the process of aerobic respiration.
- 9. the breakdown of glucose by enzymes, releasing energy and pyruvic acid.
- 10. the process most living things undergo to use food energy.