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Across 4. Found in plants but have no chlorophyll as they are underground. They absorb water 5. A type of cell that is long and thin and carries electrical impulses 7. This is where all chemical reactions take place in a cell 9. Made up of only 1 cell 10. Part of a microscope where a slide is placed. 14. Where energy is made in a cell. 16. Harmful bacteria that causes food poisoning 18. Knobs on the side of a microscope are to _______________ an image. 20. Permanent vacuoles are found in this type of cell only 22. A special microscope called an ______________ microscope is used to see bacteria and viruses 23. A type of micro-organism (8) 25. The part of the cell that controls everything that happens in the cell. 26. Which of these is an organ: nerve, heart, sperm 27. A type of micro-organism (5) 28. A gel on which bacteria can be grown.

Down 1. A useful microbe used in bread making. 2. Found in plant cells and animal cells 3. Needed for reproduction in plants and have a spiky outer coat to stick to insects 6. Found in ALL cells and allow protein to be made 7. Part of a plant cell that has a green pigment 8. An organ system that included the lungs. 11. An organ system that included the heart, veins and arteries 12. Found in plant cells but not animal cells 13. Which plant cell is tall, like a column containing chloroplasts and a vacuole? 15. These do not have a nucleus, are found in animals and carry oxygen 17. Name of a lens on a microscope 19. What type of organism does not have a nucleus, chloroplast or mitochondria 21. Which is smallest: muscle tissue, brain, onion cell, bacteria? 24. A type of micro-organism (5)