Biology Crossword

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Across
  1. 1. proteins that speed up chemical reactions
  2. 4. The unit of heredity that carries information for a particular trait
  3. 5. The release of water vapour from the aerial parts of a plants
  4. 6. A process by which large molecules are broken down into smaller ones with the addition of water
  5. 7. The light-sensitive layer at the back of the eye
  6. 10. The movement of water across a selectively permeable membrane
  7. 11. The process by which cells engulf and ingest particles
  8. 12. The regulation and maintenance of a stable internal environment in an organism
Down
  1. 2. The removal of metabolic waste products from the body
  2. 3. Chemical messengers that regulate various physiological processes
  3. 6. The natural environment where an organism lives
  4. 8. The process of cell division resulting in two identical daughter cells
  5. 9. Wave-like muscle contractions that move food through the digestive system