Richard Ren for B1 and B2

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Across
  1. 3. The net movement of particles 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.
  2. 6. The particles can move up the concentration gradient if energy is used. This is called - transport.
  3. 7. The process that make more of the same kind of organism.
  4. 8. A thing in cell that contains dna.
  5. 11. A cell that do photosynthesis.
  6. 12. The movement of water molecules from a region of high water potential to a region of lower water potential, through a partially permeable membrane.
  7. 13. the chemical reactions in cells that break down nutrient molecules and release energy.
  8. 14. A thing that animal cells don’t have but plants cells have. It surrounds the cell.
  9. 15. The ability to detect and respond to changes in the environment.
Down
  1. 1. Substances move into and out of cells by diffusion through the
  2. 2. Taking in of materials for energy, growth and development.
  3. 4. Removal from organisms of toxic materials and substance in excess of requirements.
  4. 5. Where most respiration happens.
  5. 9. an action by an organism causing a change of position or place.
  6. 10. A permanent increase in size.