Question 1

Which part of a compound light microscope is responsible for concentrating light onto the specimen, and should be positioned as close to the stage as possible for optimal illumination?

Accepted Answer

Condenser

Question 2

A student is using a microscope with a 10X ocular lens and a 40X objective lens. What is the total magnification ($$TM) $$achieved?

Accepted Answer

$$TM = 10 	imes 40 = 400$$

Question 3

When increasing the magnification by switching to a higher power objective lens, what happens to the field of vision?

Accepted Answer

The field of vision decreases

Question 4

Which microscope component is used to regulate the amount of light passing through the specimen?

Accepted Answer

Iris diaphragm

Question 5

A specimen is prepared by shaving a thin piece from the whole specimen to permit light to reveal greater structural detail. What is this preparation method called?

Accepted Answer

Section

Question 6

Which of the following best describes the function of the coarse adjustment knob on a microscope?

Accepted Answer

It brings the specimen into rough focus by adjusting the distance between the objective lens and the specimen

Question 7

If a student observes a slide with the letter 'e' under a microscope and moves the slide to the right, in which direction will the image appear to move?

Accepted Answer

To the left

Question 8

Which objective lens would be most appropriate for viewing extremely small objects, such as blood cells or bacteria, and often requires immersion oil?

Accepted Answer

100X (oil immersion) lens

Question 9

What is the primary function of the mechanical stage on a microscope?

Accepted Answer

To move the slide forward, backward, and side to side for precise positioning

Question 10

Which of the following statements about resolution in microscopy is correct?

Accepted Answer

Resolution is the ability to distinguish between closely positioned objects

Question 11

A tissue is defined as:

Accepted Answer

A group of cells that are similar in structure and function, working together to carry out one or more related activities

Question 12

Which of the following is NOT one of the primary germ layers formed during embryonic development?

Accepted Answer

Epidermis

Question 13

What is the correct sequence of organizational levels in the human body from least to most complex?

Accepted Answer

Cell, tissue, organ, organ system

Question 14

Which type of tissue is primarily responsible for covering body surfaces and lining cavities?

Accepted Answer

Epithelial tissue

Question 15

A student prepares a slide by placing a drop of blood on the glass, fixing and staining it, and covering it with a coverslip. What type of specimen preparation is this?

Accepted Answer

Smear or drop

Question 16

Which of the following best describes the function of stem cells in the early embryo?

Accepted Answer

They differentiate into many cell types and give rise to the primary germ layers

Question 17

If the resolving power of a compound light microscope is $$0.2 \ \mu m$$, what is the smallest distance between two objects that can be distinguished as separate?

Accepted Answer

$$0.2 \ \mu m$$

Question 18

Which adjustment knob should be used for fine focusing after the specimen has been brought into view with the coarse adjustment knob?

Accepted Answer

Fine adjustment knob

Question 19

When using the oil immersion lens (100X), what must be done to ensure proper viewing of the specimen?

Accepted Answer

Add immersion oil between the lens and the slide

Question 20

Which of the following statements about total magnification is correct?

Accepted Answer

Total magnification is the product of the magnifying powers of the ocular and objective lenses

Microscopic Anatomy: Microscopy, Cells, and Histology of Epithelial Tissues

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