1. Tools and Procedures

2. A common measurement system
Because experiments must be able to be repeated we need a common measurement system
Scientist use the metric system to avoid confusion
The metric system is a decimal system that uses multiples of 10

3. Metric system

4. Analyzing Data
When analyzing data, scientist will often put it in a graph
This makes it easier to understand and interpret

6. Microscopes
Microscopes are devices that produce magnified images of structures that are too small to see with the unaided eye
Light microscopes use a light rays to magnify the image
Electron microscopes produce magnified images by focusing beams of electrons

7. Laboratory techniques
a cell culture is when a group of cells is made from a single original cell
Cell fractionation is used to separate the different cell parts