Foundations of Biology Test 1

Which setting would allow you to observe a specimen with the highest possible magnification?

• Objective 5x Ocular 5x

• Objective 5x Ocular 10x

• Objective 10x Ocular 5x

• Objective 10x Ocular 10x

It is important to protect a(n) ______ from dust.

• beaker

• test tube

• compound light microscope

• analytical balance

Which microscope would be MOST useful for quickly estimating the number of red blood cells in a patient's blood sample?

• binocular stereomicroscope

• compound light microscope

• scanning electron microscope

• transmission electron microscope

Manuel's teacher asked the class to make a wet mount slide of their cheek cells. Manuel made his slide and placed it on the microscope stage. Then he got ready to view his cheek cells by following these procedures. 1. Looking through the eyepiece, Manuel adjusted the diaphragm so field of vision was lit. 2. Manuel looked at the stage from the side and lowered the body tube so the high power objective was almost touching the slide. 3. Looking into the eyepiece, he very slowly turned the coarse adjustment to bring the cells into focus. What suggestion would you make to Manuel to CORRECTLY use the microscope to view his cheek cells?

• close the diaphragm

• start with the scanning objective lens

• do not look at the stage when lowering the body tube

• start with the body tube raised and lower it while looking through the eye piece

Which part of a microscope can be adjusted to increase the magnification?

• fine adjustment knob

• coarse adjustment knob

• objective lens

• ocular lens

Which should never be used on high power?

• course adjustment knob

• fine adjustment knob

• light source

• objectives

When carrying a microscope, you should:

• have one hand on the bottom.

• have one hand on the bottom & one hand on the neck while walking with the cord wrapped securely.

• have one hand on the arm & one hand under the base while walking slowly & carefully.

• have one hand on the neck & one hand under the base.

Which part of the microscope is used to help find the total magnification?

• A

• B

• C

• O

Which of these cannot be viewed with a compound light microscope?

• cell wall

• nucleus of a plant cell

• cytoplasm

• a DNA molecule

The lower the magnification, the ___ detail you can see of the specimen, but ___. This is called ___ field of view.

• less; more of the specimen can be seen; wide

• less; more of the specimen can be seen; narrow

• more; less of the specimen can be seen; wide

• more; less of the specimen can be seen; narrow