| Term | Definition |
|---|
| Anton vom Leeuwenhoek | First used lenses to observe living organisms. |
| Robert Hooke | Coined the term "cells." |
| Matthias Schleiden | Said all plants are made of cells. |
| Theoder Schwan | Said all animals are made of cells. |
| Rudolf Virchow | Said all cells come from pre-existing cells. |
| Prokaryotic Cells | Small, simple, no nucleus, no membrane-bound organelles, single loop of DNA (nucleosome), no cellulose, cytoplasm, cell membrane, cell wall (made of carbs), somtimes have cilia or flagella (movement). |
| Eukaryotic Cells | Larger, complex, with nucleus, membrane bound organelles, DNA tightly wrapped around histone proteins in chromosomes, cellulose in plant cell walls. |
| Cell Membrane | Structure: lipid bilayer, imbedded proteins, "fluid mosaic". | Function: contains the cell, controls pasage of materials into/out of cell, allows cell to interact with environment. |
| Cell Wall | Only in plants, made of callulose (+ lignin in woody plants), provides support. |
| Nucleus | Contains DNA chromosomes, control center of the cell, contained in the nuclear envelope, nucleolus makes RNA. |
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