Year 9 Science

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Across
  1. 3. The part of the cell where energy is released during respiration.
  2. 5. The thin layer that controls what enters and leaves the cell.
  3. 6. The mass of a substance divided by its volume.
  4. 8. How much bigger an image appears compared to the real object.
  5. 9. A space in plant cells filled with cell sap that keeps the cell firm.
  6. 12. Where most chemical reactions take place in the cell.
  7. 13. A rigid layer that supports plant cells and gives them shape.
  8. 14. The part of the cell that controls what happens inside it.
  9. 15. Microscopic single-celled organisms without a nucleus.
  10. 16. A long, thin cell that carries electrical impulses around the body.
  11. 17. How clearly you can see two points as separate under a microscope.
Down
  1. 1. An instrument used to see very small objects, like cells.
  2. 2. A small circle of DNA found in bacterial cells.
  3. 4. A cell that carries oxygen around the body.
  4. 7. The tiny structure in a cell where proteins are made.
  5. 10. A plant cell adapted to absorb water and minerals from the soil.
  6. 11. What happens when an object is less dense than the liquid it’s in.
  7. 13. The part of a plant cell that contains chlorophyll for photosynthesis.