Holt: Life Science Ch 3 review: Midterms
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10 terms
Terms | Definitions |
|---|---|
 Robert Hooke | First person to describe cells. He looked at cork cells. |
| Anton Van Leeuwenhoek | Looked at animal blood. Looked at dirty water and saw things now called protists. |
| What does the Cell Theory state? | All organisms are made of one or more cells. The cell is the basic unit of all living things. All cells come from existing cells. |
| Who wrote the first two parts of the Cell Theory? | Theodor Schwann |
| Who wrote the third part of the cell theory? | Rudolf Virchow |
| cell membrane | a phospholipid layer that covers a cell's surface; acts as a barrier between the inside of a cell and the cell's environment |
| organelle | one of the small bodies in a cell's cytoplasm that are specialized to perform a specific function |
| nucleus | in a eukaryotic cell, a membrane-bound organelle that contains the cell's DNA and that has a role in processes such as growth, metabolism, and reproduction |
| prokaryote | an organism that consists of a single cell that doesn't have a nucleus |
| eukaryotes | an organism made up of cells that have a nucleus enclosed by a membrane; eukaryotes include animals, plants, and fungi, but not archaea bacteria |
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