MRS GREN, cellular respiration, and diffusion

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Across
  1. 3. To preserve a species' population
  2. 6. How do cells get oxygen?
  3. 7. Carries oxygen to the cells
  4. 8. One of the factors of making diffusion faster that gives cells more energy
  5. 9. Partially permeable to allow only certain particles to pass through
  6. 14. The ability for organisms to react to their environment
Down
  1. 1. What cells need to produce energy
  2. 2. Speeds up diffusion by giving it more area to work with
  3. 4. How do our cells turn glucose into energy?
  4. 5. Helps organisms escape danger or find food
  5. 10. Used to get rid of potentially poisonous waste products
  6. 11. When organisms burn up food to release energy
  7. 12. Needed by organisms to grow and repair tissue
  8. 13. To grow in size