SCIENCE CORSSWORD PUZZLE

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Across
  1. 3. A colourless, transparent, odourless liquid that forms the seas, lakes, rivers, and rain and is the basis of the fluids of living organisms.
  2. 7. The ability to do work.
  3. 9. The organelle where photosynthesis occurs.
  4. 10. A colourless, odourless gas produced by burning carbon and organic compounds and by respiration. It is naturally present in air (about 0.03 per cent) and is absorbed by plants in photosynthesis.
  5. 12. The flat plate where the slides are placed for observation on a compound microscope.
  6. 13. A simple sugar which is an important energy source in living organisms and is a component of many carbohydrates.
  7. 14. Wall A boundary or wall that is part of the outer structure of certain cells.
  8. 15. Any of a number of organised or specialised structures within a living cell.
  9. 16. An optical instrument used for viewing very small objects, such as mineral samples or animal or plant cells, typically magnified several hundred times.
  10. 17. A space within a cell that is empty of cytoplasm, lined with a membrane, and filled with fluid.
Down
  1. 1. The process used by plants and other organisms to convert light energy into chemical energy.
  2. 2. Light from the sun.
  3. 4. A colourless, odourless reactive gas, the chemical element of atomic number 8 and the life-supporting component of the air
  4. 5. The lens or group of lenses that is closest to the eye in a microscope, telescope, or other optical instrument.
  5. 6. A usually round part of most cells that is enclosed in a double membrane.
  6. 8. A double membrane-bound organelle found in most eukaryotic organisms.
  7. 9. A mass of cytoplasm that is bound externally by a cell membrane.
  8. 10. Membrane The thin layer surrounding the cell.
  9. 11. A chemical reaction that happens in cells.
  10. 18. An organelle within the cells of plants and certain algae that is the site of photosynthesis.