Chapter 3 Quiz

What structure does light pass through after leaving the condenser in a compound light microscope?

• ocular lens

• objective lens

• specimen

• illuminator

Simple staining if often necessary to improve contrast in which microscope?

• compound light microscope

• phase-contrast microscope

• darkfield microscope

• fluorescence microscope

• electron microscope

Which microscope achieves the highest magnification and greatest resolution?

• compound light microscope

• phase-contrast microscope

• darkfield microscope

• fluorescence microscope

• electron microscope

Which microscope is used to see internal structures of cells in a natural state?

• compound light microscope

• phase-contrast microscope

• darkfield microscope

• fluorescence microscope

• electron microscope

In Figure 3.1, line "c" points to the microscope's

• iluminator

• condenser

• ocular lens

• objective lens

Which microscope is used to observe a specimen that emits light when illuminated with an ultraviolet light?

• compound light microscope

• phase-contrast microscope

• darkfield microscope

• fluorescence microscope

• electron microscope

What is the total magnification of a specimen viewed with a 10x ocular lens and a 45x objective lens?

• 4.5x

• 10x

• 45x

• 100x

• 450x

The resolution of a microscope can be improved by changing the

• condenser

• fine adjustment

• wavelength of light

• diaphragm

• coarse adjustment

A student is looking at a bacterial specimen using the oil immersion lens, but has forgotten to put immersion oil on the slide. The specimen will appear

• smaller than it would if immersion oil was used

• larger than it would if immersion oil was u sed

• somewhat fuzzy and have poor resolution

• the same as it would if the immersion was used.

The purpose of the ocular lens is to

• improve resolution

• magnify the image from the objective lens

• decrease the refractive index

• increase the light

• decrease the light