Ecology Bend 2: Part 2

2. the movement of substances across a cell membrane down their concentration gradients, which does not require energy
5. nature's way of reusing carbon atoms, which travel from the atmosphere into organisms in the Earth and then back into the atmosphere over and over again
7. A chemical process in which oxygen is used to make energy from carbohydrates
8. the process in which water is continuously brought into the sky then rained back down from clouds
12. scientific name for sugar; product of photosynthesis
15. the biogeochemical cycle that describes the transformation and translocation of phosphorus in soil, water, and living and dead organic material
17. the process in which incomplete oxidation of glucose occurs in the absence of oxygen
18. when two solutions have the same osmotic pressure it is a _____ solution
19. the net movement of anything generally from a region of higher concentration to a region of lower concentration
20. a repeating cycle of processes during which nitrogen moves through both living and non-living things: the atmosphere, soil, water, plants, animals and bacteria

1. outside surface of cell that separates and protects the interior of the cell
3. the movement of solvent molecules through a selectively-permeable membrane from a high water concentration to a low one
4. the process in which organisms take in oxygen and release carbon dioxide
6. the movement of molecules across a cell membrane into a region of higher concentration, assisted by enzymes and requiring energy
9. long-term shifts in temperatures and weather patterns
10. the process in which plants turn CO2 into oxygen and glucose
11. having a lower osmotic pressure than a particular fluid, typically a body fluid or intracellular fluid
13. having a higher osmotic pressure than a particular fluid, typically a body fluid or intracellular fluid
14. gas in the atmosphere that living animals and humans need to breathe
16. chemical compound made up of 1 carbon molecule and 2 oxygen molecules