sience chapt 2 sect 2
Order by
18 terms
Terms | Definitions |
|---|---|
 cell theory 1 | all organisms are made of one or more cells |
| cell theory 2 | the cell is the basic unit of organization in organism |
| cell theory 3 | all cells come from cells |
| Hooke | made the first microscope |
| brightfield microscope | light microscope, image viewed against bright background; most often used to study cells; up to 2,000x |
| darkfield microscope | image bright against dark background; up to 2,000x; details more visible than brightfield |
| Hooke microscope | up to 250x; historic, handheld, clear images of "beasties" |
| Flourescence microscope | up to 1,500x; specimen must be treated with special flourescent stain; certain cell structures and substances glow |
| Transmission electron microscope | aims a beam of electrons through specimen; up to 1,000,000x |
| Phase-contrast microscope | emphasizes differences in specimen's capacity to bend light waves; good for viewing living cells; up to 1,500x |
| Scanning electron microscope | sweeps beam of electrons over specimen causing other electrons to be emitted; realistic 3-D image; 200,000x |
| Zacharriar Janssen | first to look through a compound microscope |
| Antonie van Leeuwenhoek | made simple microscope with glass bead |
| Robert Hooke | saw box like things in cork called them cells |
| Matthias Schleider | said that all plants are made of cells |
| Theodor Schwann | said all animal cells are made of cells |
| Rudolph Virchow | said all cells come from a cell that existed before |
| the virus attaches to a specific host cell | virus #1 |
First Time Here?
Welcome to Quizlet, a fun, free place to study. Try these flashcards, find others to study, or make your own.