B1 Characteristics of living organisms B2 Cells

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Across
  1. 3. ： change of position or place
  2. 4. ： never found in animal cells, but most of the cells in the green parts of plants have them
  3. 7. ： chemical reactions breakdown nutrient molecules and release energy in cells
  4. 9. ： the net movement of molecules and ions from a region of their higher concentration to a region of their lower concentration down a concentration gradient, as a result of their random movement
  5. 10. ： a space in a cell, surrounded by a membrane and containing a solution
  6. 11. : the net movement of water molecules from a region of higher water potential (dilute solution) to a region of lower water potential (concentrated solution), through a partially permeable membrane
  7. 13. ： removal from organism of toxic substances，waste product of metabolism，and substances in excess of requirement
  8. 14. ： taking in materials for energy，growth and development
  9. 15. ： permanent increase in size
Down
  1. 1. ： Whatever sort of animal or plant they come from, all cells have a cell membrane (sometimes called the cell surface membrane) around the outside
  2. 2. ： All plant cells are surrounded by a cell wall made mainly of
  3. 5. ： the process that make more of the same kind of organism
  4. 6. ： a clear jelly. It is nearly all water; about 70% is water in many cells
  5. 8. ： where the genetic information is stored
  6. 12. ： the ability to detect the stimuli and carry out responses