Introduction to Cells

2. The human body is about 2/3 ________________.
4. Some proteins are ________________ that speed up chemical reactions in living things.
6. Plant cells have a cell _____________. Animal Cells do not.
8. All ___________ things are made up of cells.
9. Structure and Function
10. Explanation of the relationship between cells and living things. (two words w/1 space)
14. Quick Energy
18. __________________ microscopes allow scientists to obtain pictures of things too small to be seen with light microscopes.
19. Energy Storage
20. The "brains" of the cell where instructions reside in Nucleic Acids.
22. Hooke named empty spaces in cork "cells" because they appeared like tiny _______________.
25. Similar cells working together to perform a function.
26. The prefix Magni- means: Great or _____________.

1. The "balloon" that contains a cell's bag of water and contents and controls what gets in and what goes out is the cell ________________________.
3. The Greek prefix "Endo" means ______________ or within.
4. Substance that cannot be broken down into simpler substances.
5. All cells are _______________ by other cells.
7. Instrument that makes small things look larger.
11. Different tissues that function together.
12. group or organs that work together to perform a major function.
13. Diffusion is the movement of __________________ through a substance.
15. Basic units of structure and function in living things.
16. Leeuwenhoek named one-celled organisms ____________________ meaning "little animals".
17. The prefix Micro- means: Very Small or _____________.
21. Two or more elements combined chemically.
23. The movement of water through a semi-permeable membrane is called __________________.
24. DNA is genetic material that carries information about an organism. It is a ________________ Acid