1. All living things are made of cells

2. All living things are based on a universal genetic code

3. All living things reproduce

4. All living things grow and develop

5. All living things obtain and use energy

6. All living things adapt and evolve

7. All living things respond to their environment

8. All living things maintain a stable internal environment

Chemical reactions through which an organism carries out its life processes

Regulation of an organisms internal environment to maintain conditions suitable for its survival

Common steps scientists use to gather information and answer questions

1. Collect observations and state the problem

2. Form a hypothesis

3. Plan and perform multiple experiments

4. Observe and record results

5. Draw conclusions

A hypothesis that is supported by a large body of scientific evidence

• The variable you mess with or what you can change
• Goes on the X axis

• The variable you measure or what you can't directly control
• Goes on the Y axis

1. Must have a title

2. Axis is labeled with units of measurements

3. Key

4. Use all of graph paper

Experiments that result in counts, measurements, or numerical data

Oservational data that is written descriptions of what scientists observe

• Use a beam of light passing through one or more lenses
• Can view living and dead organisms

• Use electrons instead of light
• Cannot view living organisms

1. Transmission Electron Microscope

2. Scanning Electron Microscope

Uses electrons

Reveals internal structures

See 3-D images of cell surfaces

Reveals surface structures