Cells and Microscopes

1. Controls the amount of light in a microscope.
3. Jelly-like fluid that fills a cell
7. The taking in of matter by a living cell.
12. Provides the cell with energy.
13. Exist at or from an earlier time.
14. The part of a microscope you look through.
15. A measurement that measures very small distances.
16. The green plant cells where photosynthesis takes place.
17. Uses a lens close to the object being viewed to collect light.
20. A process when carbon dioxide, water, and certain inorganic salts are converted into carbohydrates.
21. Moves the sperm to the egg.
22. Made of cellulose and supports the cell.
23. A microscopic organisms that make up everything.
25. A philosopher who invented the compound microscope.
26. Parts of a microscope that help you see the specimen more clear and up closer.
27. Control center that contains DNA.
28. Keeps substances in the cell and controls what goes in and out.

2. The death of cells which occurs as a normal and controlled part of an organism's growth or development.
4. A cell copies itself to make an identical cell.
5. Associated with the invention of the first optical telescope credited with inventing the first compound microscope.
6. One thousand millionth of a metre.
8. Gathers light and magnifies.
9. The platform on a microscope where the object to be examined is placed.
10. Specialized to carry "messages" through the body.
11. Uses focused light and lenses on magnifying a specimen, usually a cell.
18. Contains cell sap keeps the cell firm.
19. Cells that carry oxygen.
22. A scientific theory which describes the properties of cells.
24. A type of cell that's not an animal cell.