Chapter 3 Vocabulary Practice

What is the meaning of '1 micrometer'?

What is the meaning of '1 nanometer'?

What is the function of an 'illuminator' in a microscope?

• The light source on a microscope

• The lens that magnifies the specimen

• The knob used to focus the image

• The stage where the slide is placed

What is the function of a 'condenser' in a microscope?

• Has lenses that direct the light rays through the specimen

• Magnifies the specimen for viewing

• Holds the specimen in place

• Adjusts the focus of the microscope

What are 'Objective lenses' in a microscope?

• Lenses closest to the specimen

• Lenses used for adjusting the light

• Lenses located in the eyepiece

• Lenses that hold the slide

What is an 'Ocular lense'?

• Eyepiece

• Objective lens

• Condenser

• Stage

What does 'Refractive index' measure?

• A measure of the light-bending ability of a medium

• A measure of the heat conductivity of a medium

• A measure of the electrical resistance of a medium

• A measure of the density of a medium

What are 'Antibodies'?

• Natural defense molecules that are produced by humans and many animals in reaction to a foreign substance

• Cells that transport oxygen in the blood

• Enzymes that digest food in the stomach

• Hormones that regulate growth and development

What is 'Staining' in microbiology?

• Coloring the microorganism with a dye

• Killing the microorganism with heat

• Growing the microorganism in a culture medium

• Removing the microorganism from a sample

What is a 'Smear' in microbiology?

• Thin film of material containing the microorganisms spread over the surface of the slide

• A thick layer of agar used for culturing bacteria

• A method of sterilizing laboratory equipment

• A type of stain used to color bacterial cells