Living Environment

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Across
  1. 1. Absorbs light energy and converts it to ATP
  2. 3. Organ recipients worry about this if their body treats the new organ like a foreign object
  3. 6. Microscopic structures where gas is exchange between air and blood
  4. 7. Organ that stores bile
  5. 9. In humans, right lungs have three of these
  6. 11. Cartilaginous tube through which air passes to get to the lungs
  7. 13. Powerhouse that produces ATP energy in cells
  8. 15. Oxygen-poor blood returns from the body into this chamber of the heart
  9. 19. Maintaining of a stable internal environment
  10. 20. Component of blood responsible for clotting
  11. 21. Group in an experiment that does not receive any change in the variable being tested
  12. 23. Regulate what enters and exits cells in plants
  13. 25. Filters what gets into and out of cells
  14. 26. Building block molecules for carbohydrates
  15. 27. Source of stored energy
  16. 30. Site of bile production
  17. 31. Model the describes how enzymes fit substrates
  18. 32. Cancer of white blood cells
  19. 35. Site where oxygen and carbon dioxide enter and exit a leaf
  20. 36. Building blocks for proteins
  21. 37. Intestine where bile is introduced to emulsify fats
Down
  1. 1. One cell thick, they allow for exchange of gas between arteries and veins
  2. 2. Part of the brain that controls breathing more quickly during exercise
  3. 4. Organelle found only in plant cells
  4. 5. Buildup of cholesterol found in the gallbladder
  5. 8. Variable that is being changed or caused by some other factor
  6. 10. Removal of metabolic cellular waste
  7. 12. Produces proteins for cells
  8. 14. Chemical formula for inorganic compound often used in cooking
  9. 16. System that gets destroyed by acquired immunodeficiency syndrome
  10. 17. Immune system response to a substance which is harmless to most people
  11. 18. Involuntary muscle movement that occurs in digestive organs
  12. 20. Another name for the light reaction of photosynthesis
  13. 22. A lack of this in the muscles causes lactic acid fermentation in humans
  14. 24. Thick and muscular, these carry oxygenated blood away from the heart
  15. 25. Non-living material that gives plant cell walls structure
  16. 28. Promotes immunity by triggering a body to respond to a dead or weakened virus
  17. 29. We breathe more quickly when CO2 builds up in the blood and we need more of this
  18. 33. All the chemical reactions required for life
  19. 34. Condition caused by human immunodeficiency virus