Biology revision crossword

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Across
  1. 4. The green pigment in chloroplasts that absorbs light
  2. 8. where respiration happens in a cell
  3. 11. The organ where water is absorbed back into the body from food waste
  4. 12. What happens to an enzyme's shape if the temperature or pH gets too high.
  5. 13. Blood vessels that carry blood away from the heart
  6. 14. The movement of water molecules across a partially permeable membrane
  7. 15. The process of releasing energy from glucose using oxygen
Down
  1. 1. The gas required by plants for photosynthesis
  2. 2. A simple, single-celled organism that lacks a nucleus (e.g., bacteria).
  3. 3. A biological catalyst that speeds up chemical reactions in the body.
  4. 5. The movement of substances against a concentration gradient, which requires energy
  5. 6. The movement of particles from a high concentration to a low concentration
  6. 7. The specific shape on an enzyme where the substrate binds.
  7. 9. The tiny air sacs in the lungs where gas exchange takes place
  8. 10. The muscle that pumps blood around the body