Biology vocab

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Across
  1. 2. consistent physical and chemical conditions maintained by the cell
  2. 4. cycle that generates high-energy sugars
  3. 8. solution with a PH of more than 7
  4. 9. solution with a greater concentration of solutes
  5. 11. compound used by cells to store and release energy
  6. 15. attraction between the molecules of different substances
  7. 18. organelle that breaks down materials into useable molecules
  8. 20. substance that is dissolved in a solution
  9. 21. basic unit of all forms of life
  10. 22. organism whose cells contain a nucleus
  11. 26. organelle that converts energy stored in food into energy useable by the cell
  12. 29. diffusion of water through a selectively permeable membrane
  13. 31. primary pigment used by plants and other photosynthetic organisms
  14. 32. process by which particles move from areas of higher to lower concentration
  15. 34. solution with a PH of less than 7
  16. 35. attraction between molecules of the same substance
  17. 37. water channel protein in a cell
  18. 38. elements or compounds that enter into a chemical reaction
  19. 39. element that contains different numbers of neutrons
  20. 40. basic unit of matter
  21. 41. substance formed by the combination of two or more atoms
  22. 43. network of protein filaments that give the cell its structure
  23. 44. place where lipid components of the membrane are assembled
  24. 45. fluid portion of the cell outside of the nucleus
  25. 47. thin, flexible barrier that surrounds all cells
  26. 49. group of cells that perform a similar function
  27. 50. protein catalyst that speeds up biological reactions
  28. 51. light-absorbing molecules used by plants to gather the sun's energy
Down
  1. 1. sac-like photosynthetic membranes found in chloroplasts
  2. 3. product of an enzyme-influenced reaction
  3. 5. organelle that stores material
  4. 6. compound that prevents sharp, sudden changes in PH
  5. 7. solution with a lesser concentration of solutes
  6. 10. type of mixture in which all components are evenly distributed
  7. 12. pure substance of only one type of atom
  8. 13. protein whose shape fits a specific molecular messenger
  9. 14. dissolving substance in a solution
  10. 16. structure that contains the cell's genetic information
  11. 17. smallest unit of most compounds
  12. 19. protein on the thylakoid membrane that allows H+ atoms to pass through
  13. 23. unicellular organism that lacks a nucleus
  14. 24. process used by autotrophs to capture light energy and use it for power
  15. 25. fluid portion of the chloroplast
  16. 27. atom that has a positive or negative charge
  17. 28. negatively charged particle
  18. 30. group of tissues that work together to perform similar functions
  19. 33. solution with equal concentration
  20. 36. cluster of chlorophyll and proteins found in thylakoids
  21. 42. specialized structure in a eukaryotic cell
  22. 46. material composed of two or more types of atoms that are not chemically combined
  23. 48. organelle, the site of protein synthesis