BIOLOGY The Science of Life

• 1. Observe something of interest and state the problem
• 2. Gather information and form a hypothesis
• 3. Conduct the experiment to test the hypothesis
• 4. Record and Analyze data
• 5. Form conclusions
• 6. Repeat the experiment

• A factor being tested
• -Only test one variable at a time

The group of subjects that do not recieve the variable

The group of subjects that do recieve the variable

The factors kept the sme in both the control and experimental group to ensure only one variable is tested

The number of test subjects used in an experiment; Use as many subjects as possible (at least 50)

Because this leads to more reliable results

Expressions of measurement (grams, mm, cm, etc.)

• 1. Light microscopes use light to see images, electron microscopes use a beam of electrons
• 2. You can view live specimens with a light microscope, but the specimens have to be dead when viewing with an electron microscope
• 3. Electron microscopes have a higher resolution quality than light microscopes

The amount of enlargement of an image under a microscope

The clarity of an image under a micoscope

A point where objects get blurry and detail is lost