Complete the crossword, then click on "Check" to check your answer. If you are stuck, you can click on "Hint" to get a free letter. Click on a number in the grid to see the clue or clues for that number.

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 Check 

Across: 2. Red-brown liquid used to stain nuclei. (6,8) 3. Green structure containing chlorophyll. (11) 6. Unicellular pond animal shaped like a slipper. (10) 7. Area of a plant cell containing the sap. (7) 8. Basic unit of life. (4) 9. Instrument used to view cells. (10) 10. Carbohydrate which is used to make cell walls. (9) 11. Unicellular pond animal with no definite shape. (6) 12. Area of the cell where chemical reactions occur. (9) 13. Boundary of a plant cell which gives it it's definite shape. (4,4)

Down: 1. Thin flexible boundary of all cells. (4,8) 4. Object being viewed through a microscope. (8) 5. Structure of a cell that controls the cell activities. (7) 8. Solution of sugar and salts. (4,3) 9. One thousandth of a millimetre. (10)