Cell Basics

Cells and microscopes

1. Life Is Cellular

2. Learning Objectives
State the cell theory.
Describe how the different types of microscopes work.
Distinguish between prokaryotes and eukaryotes.

3. The Discovery of the Cell
Anton van Leeuwenhoek was the first to observe living microorganisms.

4. The Cell Theory
•All living things are made up of cells.
•Cells are the basic units of structure and function in
living things.
•New cells are produced from existing cells.

5. Exploring the Cell
Most microscopes use lenses to
magnify the image of an object by
focusing light or electrons.

6. Electron Microscopes
Two types of electron
microscopes:
•transmission
•scanning
Electron Microscope

7. Micrographs
A micrograph is a photo of an object seen through
a microscope.
Light Microscope
Transmission Electron
Microscope
Scanning Electron
Microscope

8. Micrographs Review
Scanning Electron MicroscopeLight MicroscopeTransmission Electron Microscope
Light Microscope Using
Fluorescent Stain

9. Cell Size
Certain units of measurement are used for
tiny objects, such as cells.

10. Prokaryotes and Eukaryotes
Nucleus Nucleus
Cell Membrane
Cell Membrane
Cell Membrane
Intracellular
Compartments
Intracellular
Compartments

11. Review
•All living things are made up of cells.
•Cells are the basic units of structure and function in
living things.
•New cells are produced from existing cells.