Cells

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Across
  1. 1. One of the small structures that make up living organisms.
  2. 3. The smallest type of blood vessel, which delivers blood close to every cell in the body.
  3. 6. A living thing.
  4. 7. A structure found in animal and plant cells, which controls the activity of the cell.
  5. 8. Very long strand of cytoplasm along which electrical signal travels.
Down
  1. 1. A structure inside some plant cells, which contains the green pigment chlorophyll; where photosynthesis takes place.
  2. 2. To colour something, making it easier to see.
  3. 3. The 'background' substance that fills a cell, in which many chemical reactions happen.
  4. 4. A red pigment inside red blood cells, which carries oxygen around the body.
  5. 5. A group of similar cells that work together for a particular function.
  6. 9. A structure that is comprised of many different tissues, which work together to perform a particular function.