Biology Unit 3: Matter and Energy in Living Systems

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Across
  1. 4. A community of organisms where there are several interrelated food chains
  2. 7. A group of ecosystems that share similar climates and typical organisms
  3. 11. An organism that can make its own food.
  4. 12. Process that releases energy by breaking down glucose and other food molecules in the presence of oxygen
  5. 13. process in which elements, chemical compounds, and other forms of matter are passed from one organism to another and from one part of the biosphere to another
  6. 14. An electron carrier involved in photosynthesis. Light drives electrons from chlorophyll to NADP+, forming NADPH, which provides the high-energy electrons for the reduction of carbon dioxide to sugar in the Calvin cycle.
  7. 16. All the different populations that live together in an area
  8. 17. total amount of living tissue within a given trophic level
  9. 20. An organism that obtains energy by feeding on other organisms
  10. 21. Coal, oil, natural gas, and other fuels that are ancient remains of plants and animals.
Down
  1. 1. A diagram that shows the amount of energy that moves from one feeding level to another in a food web
  2. 2. the variety of life in the world or in a particular habitat or ecosystem.
  3. 3. A group of individuals that belong to the same species and live in the same area
  4. 5. organelle found in cells of plants and some other organisms that captures the energy from sunlight and converts it into chemical energy
  5. 6. Process that does not require oxygen
  6. 8. A biological community of interacting organisms and their physical environment.
  7. 9. Process that requires oxygen
  8. 10. Cell organelle that converts the chemical energy stored in food into compounds that are more convenient for the cell to use
  9. 15. 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
  10. 18. (adenosine triphosphate) main energy source that cells use for most of their work
  11. 19. A series of steps in which organisms transfer energy by eating and being eaten