biology chpter 7

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Across
  1. 2. bi layer gives cell membranes a flexible structure that forms a strong barrier between the cell and its surroundings
  2. 8. biological eqivilants of solar power plants
  3. 11. cells that enclose DNA in nuclei
  4. 12. the process by which particles move from an area of high concentration to an area of lower concentration
  5. 14. basic unit of life
  6. 16. the portion of the cell outside the nucleus
  7. 17. cells that do not enclose DNA in nuclei
  8. 18. structures that act like specialized organs
  9. 19. a large membrane-enclosed structure that contains genetic material
Down
  1. 1. network of protein filaments
  2. 3. eukaryotic cell variation; lives solitary as unicellular organism
  3. 4. membrane thin, flexible barrier that surrounds all cells
  4. 5. power plant of cell
  5. 6. located near the nucleus and help organize cell division
  6. 7. small organelles filled with enzymes
  7. 8. wall a strong, supporting layer around the membrane
  8. 9. permeable same substances can pass across them and others cannot
  9. 10. small particles of RNA and protein found throughout the cytoplasm in all cells
  10. 13. theory fundamental concept of biology
  11. 15. large, sac-like membrane-enclosed structure inside cell