Across
- 4. cycle The transfer of nitrogen from the atmosphere to the soil, to living organisms, and back to the atmosphere
- 6. cycle second stage of cellular respiration, in which pyruvic acid is broken down into carbon dioxide in a series of energy-extracting reactions
- 8. respiration
- 10. organelle found in cells of plants and some other organisms that captures the energy from sunlight and converts it into chemical energy
- 11. A catabolic process that makes a limited amount of ATP from glucose without an electron transport chain and that produces a characteristic end product, such as ethyl alcohol or lactic acid.
- 12. flow the flow of energy from an ecosystem to an organism and from one organism to another
- 13. A thing
- 14. cycle The continuous process by which water moves from Earth's surface to the atmosphere and back
- 15. cycle The movement of phosphorus atoms from rocks through the biosphere and hydrosphere and back to rocks.
Down
- 1. Conversion of light energy from the sun into chemical energy.
- 2. An organism that obtains energy by feeding on other organisms
- 3. that releases energy from food in the presence of oxygen
- 5. An organelle found in large numbers in most cells, in which the biochemical processes of respiration and energy production occur.
- 7. A metabolic process that breaks down carbohydrates and sugars through a series of reactions to either pyruvic acid or lactic acid and release energy for the body in the form of ATP
- 9. cycle the movement of carbon from the nonliving environment into living things and back
- 12. transport chain series of electron carrier proteins that shuttle high-energy electrons during ATP-generating reactions