Holt: Life Science Ch 3 review: Midterms
|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|