Biology Semester Test

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Across
  1. 7. gradient, difference in concentration from one area to another
  2. 9. contains chlorophyll and is the place where photosynthesis takes place
  3. 11. a mixture where a substance (solute) in dissolved in a solvent (water)
  4. 15. bonding, the force that holds water molecules to each other and other objects.
  5. 16. Membrane, Maintains homeostasis by controlling what enters and leaves the cell
  6. 17. a highly condensed (packed) form of DNA
  7. 20. Cycle, a repeated pattern of growth, DNA duplication, and cell division that occurs in eukaryotic cells
  8. 21. is any living thing
  9. 23. energy, the energy needed to start a chemical reaction.
  10. 24. building up and breaking down of molecules.
  11. 27. Water Fearing
  12. 29. Transport, movement into and out of the cell
  13. 30. organisms that make their own food.
  14. 31. The process of programmed cell death
  15. 32. diffusion, is the movement of molecules from a higher concentration to a lower concentration using a protein.
  16. 33. process in which organisms use energy from sunlight to make the sugar glucose.
  17. 34. small structures inside a cell that have specific functions
  18. 35. allows some substances to pass through the cell membrane but not others
Down
  1. 1. cell division that results in two daughter cells each having the same number and kind of chromosomes as the parent nucleus.
  2. 2. uncontrolled cell division is known
  3. 3. is the diffusion of water across a semipermeable membrane
  4. 4. large molecules that are critically important to all living things.
  5. 5. the framework for making explanations in the science classroom
  6. 6. an optical instrument used for viewing very small objects
  7. 8. factors, are proteins that stimulate cell division.
  8. 9. molecule is attached to phospholipids or proteins and is used for cell identification
  9. 10. a pigment that absorbs light energy.
  10. 12. is stable internal conditions
  11. 13. the basic unit of life.
  12. 14. mosaic model, The phospholipid bilayer of the cell membrane
  13. 18. fluid that surround the thylakoids
  14. 19. the study of all forms of life.
  15. 22. Water Loving
  16. 25. proteins that speed up chemical reactions
  17. 26. coin-shaped membrane that contains chlorophyll
  18. 28. substances that are known to cause or lead to cancer