Tools of biology

If a scientist wanted to observe a virus, he would use a(n)

• telescope

• light microscope

• electron microscope

• centrifuge

Which tool separates materials based on density?

• paper chromatography

• centrifuge

• triple beam balance

• graduated cylinder

Which part of the microscope changes the magnification by switching the objective lenses?

• eyepiece

• body tube

• nosepiece

• diaphragm

What is the name of part J

• coarse adjustment knob

• fine adjustment knob

• diaphragm

• nosepiece

Which letter is pointing to the stage?

• C

• D

• E

• F

If your eyepiece has a magnification of 10x and you are using the 4x objective lens, what is the total magnification?

• 14x

• 10x

• 4x

• 40x

Paper chromatography is a laboratory technique that is used to 

• separate different molecules from one another
• stain cell organelles
• indicate the pH of a substance
• compare relative cell sizes

What is the volume of water represented in the graduated cylinder shown?

• 10.3 mL
• 13.0 mL
• 14.0 mL
• 15.0 mL

The results of an experiment using plant pigments is represented in the diagram.
Which phrase could be used to describe this technique? 

• the use of chromatography to separate molecules in a mixture
• the use of cut leaves to observe certain colors
• using indicators to determine pH
• using dichotomous keys to identify plants