| A | B |
|---|
| Zacharias Jenssen | by combining two convex lenses he created the first crude compound microscope |
| Anton Van Leeuwenhoek | used a glass bead for a lens to create a microscope that would magnify up to 270 times |
| compound light microscope | has an eyepiece lens and an objective lens and light passes through the object being magnified |
| electron microscope | uses a magnetic field to bend a beam of electrons and can magnify images up to one million times |
| transmission electron microscope | is used to study parts inside a cell if object is sliced very thin and placed inside a vacum |
| scanning electron microscope | is used to view the outside of objects and very often used to view and photograph living cells |
| Robert Hooke | coined the term "cell" when looked a thin slice of cork |
| cells | the smallest units of life which carry out all of the activities of life in an organism |
| convex lens | lens which magnifies in microscopes |
| The Cell Theory | cells are the basic units of life, all organisms are made of one or more cells, and all cells come from pre-existing cells |
