hierarchical organization

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Across
  1. 6. The organ system which interprets and responds to informations, e.g. brain.
  2. 7. The basic structure is the smallest particle of life.
  3. 8. A part of the cell which is formed by the macromolecules, provide different functions inside the cell.
  4. 9. A group of similar cells corporate to perform a particular function.
  5. 11. The organ system which protects organ, shape our body and allows movement, e.g. bones.
  6. 12. A group where the same species of organism live together in a specific area.
Down
  1. 1. The organ system which transports materials to and from cells, e.g. heart.
  2. 2. A group of similar cells corporate to perform a particular function.
  3. 3. The organ system which allows for movement by contracting, e.g. muscle.
  4. 4. The organ system which takes in and digests food, e.g. intestine.
  5. 5. The organ system which takes in oxygen and removes another useless substances, e.g. lungs.
  6. 10. The smallest unit where life exists. Made up of various organelles, work as the building block for all organisms.