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| 1. | A ________ holds the contents of a cell together (2 words) |
| 3. | ___________ form the cell membrane |
| 4. | Hooke did not think animals had cells because they don't have ______ |
| 6. | _______ are the smallest but most abundant organelles |
| 7. | Leeuwenhoek was the first person to see _________ |
| 9. | Endoplasmic ________ are the membrane covered cell organelle that produce lipids |
| 11. | ________ have two membranes and the inner one has many folds in it |
| 12. | _______ is the person who found out that all cells come from existing cells |
| 13. | Lysosomes digest food particles, ____, cell parts and foreign invaders |
| 14. | Bean shaped _______ are called mitochondria |
| 16. | Ribosome's are the parts of cells where _______ are made from amino acids |
| 17. | You are made up of about one ______ cells |
| 18. | In plant cell the cell wall is made of ________ fibers |