Intro to Bio

Biology

The study of life.

Coarse adjustment knob.

The knob we use when viewing things on low power.

Control group

The group that keeps "normal conditions."

Control variables

The variables that stay the same between both groups.

Conclusion

States whether your hypothesis was supported or refuted by your experiment.

Data

The information gathered during your experiment.

Dependent variable

The variable that is on the y-axis. The variable that cannot exist without the other variable.

Diaphragm

The part that controls the amount of light going through the microscope.

Experiment

A test of the hypothesis.

Experimental group

The group that receives the experimental variable.

Experimental variable

The variable that is being tested. The variable that is different between groups.

Eyepiece

The part of the microscope that you look through. Magnifies 10x.

Fine adjustment

The adjustment knob that brings the image into sharp focus. It is used only on high power.

Hypothesis

The second step of the Scientific Method. An "educated guess" about an observed phenomena.

Independent variable

The variable that causes a change in the other variable. This is the variable that the experimenter is changing. Found on the x-axis of the graph.

Objectives

These are the different lenses that magnify the image 4, 10, or 40x

Organism

Any living thing.

Stage

This is the place where the slide is placed.

Theory

This is formed after a hypothesis has been tested many times, over many years, and by many scientists.

Total magnification

This is found by multiplying the eyepiece times the objective lens.

Prokaryote

Baceria. They do not have a nucleus or membrane-bound organelles.

Eukaryote

Organisms that have a cell membrane and membrane-bound organelles.