Across
- 3. colourless, odourless, tasteless gas essential to living organisms, being taken up by animals, which convert it to carbon dioxide.
- 8. A chemical process in which oxygen is used to make energy from carbohydrates (sugars
- 9. a process by which molecules of a solvent tend to pass through a semipermeable membrane from a less concentrated solution into a more concentrated one, thus equalizing the concentrations on each side of the membrane.
- 10. cycle, the cycle of processes by which water circulates between the earth's oceans, atmosphere, and land, involving precipitation as rain and snow, drainage in streams and rivers, and return to the atmosphere by evaporation and transpiration.
- 13. transport,the movement of ions or molecules across a cell membrane into a region of higher concentration, assisted by enzymes and requiring energy.
- 14. cycle,the series of processes by which nitrogen and its compounds are interconverted in the environment and in living organisms, including nitrogen fixation and decomposition.
- 15. loops,a biological occurrence wherein the output of a system amplifies the system (positive feedback) or inhibits the system (negative feedback).
- 16. the process by which plants convert light energy into chemical energy for use in growth and cellular repair.
- 19. A chemical process in which oxygen is used to make energy from carbohydrates (sugars).
- 21. cycle,the series of processes by which carbon compounds are interconverted in the environment, involving the incorporation of carbon dioxide into living tissue by photosynthesis and its return to the atmosphere through respiration, the decay of dead organisms, and the burning of fossil fuels.
- 22. one that has the same osmolarity, or solute concentration, as another solution
Down
- 1. a colorless, odorless gas produced by burning carbon and organic compounds and by respiration. It is naturally present in air (about 0.03 percent) and is absorbed by plants in photosynthesis.
- 2. cycle,the biogeochemical cycle that describes the transformation and translocation of phosphorus in soil, water, and living and dead organic material.
- 4. a microscopic membrane of lipids and proteins which forms the external boundary of the cytoplasm of a cell or encloses a vacuole, and regulates the passage of molecules in and out of the cytoplasm.
- 5. transport,movement of a solute from a region of high electrochemical potential on one side of the cell membrane to a region of lower electrochemical potential on the opposite side.
- 6. the net passive movement of molecules from region of higher concentration to region of lower concentration
- 7. the environment outside of the cell has a higher concentration of solutes than the cell itself.
- 11. the process in which incomplete oxidation of glucose occurs in the absence of oxygen. It is commonly known as fermentation.
- 12. Climate change refers to long-term shifts in temperatures and weather patterns.
- 17. any external solution that has a low solute concentration and high water concentration compared to body fluids.
- 18. (sugar),a simple sugar, or monosaccharide.
- 20. A substance present in all living cells that provides energy for many metabolic processes and is involved in making RNA.