Quiz 47: Microbiology and Disease

A single-celled eukaryotic organism that is generally much larger than bacteria and is found in soil and water is called a(n) _______. These organisms can cause diseases such as malaria and amebic dysentery.

The determination of the number of bacteria present in specimens such as urine is referred to as a(n) _________ analysis.

An organism that lives on or in another organism and uses that other organism to the detriment of the host organism is a(n) ________.

Bacterial species that retain the purple dye even after the decolorizer is added and appear blue or violet are referred to as ________ ________ bacteria.

A(n) ________ mount is a type of mount used when a physician suspects that a patient has a fungal infection of the skin, nails, hair, or vagina because it dissolves the keratin and allows visualization of any fungus.

The determination of the type of pathogen on a culture plate is referred to as a(n) ________ analysis of the specimen.

When a Gram stain is performed, bacteria that lose the purple color when the decolorizer is added and pick up the red color of the safranin are referred to as ________ bacteria.

A(n) ________ agent is a living microorganism or its toxin that may cause human disease. A label with this and a biohazard symbol must be affixed to a package containing a microbiologic specimen sent through the mail.

Large, fuzzy, multicelled fungi that produce spores are called ________.

A specimen may be directly viewed as a(n) ________, in which a specimen is spread thinly and evenly across a slide.

The smallest known infectious agent, consisting only of nucleic acid surrounded by a protein coat, is a(n) ________.

The procedure that involves culturing a specimen and then testing the isolated bacterium's susceptibility to certain antibiotics is called a culture and ________ test.

A(n) ________ is a solution of a dye or group of dyes that imparts a color to microorganisms.

A pathogen that is made of protein, is very small, and has no nucleic acid is a(n) ________.

Iodine is an example of a(n) ________, which is a substance that intensifies or deepens the response of a specimen to a stain.

A fungus that grows mainly as a single-celled organism and reproduces by budding is referred to as a(n) ________.

In cases of a suspected parasitic worm infestation, the physician may request a(n) ________ specimen.

In addition to their shape, bacteria are commonly classified by how they react to certain stains. The most common staining procedure in use today is the ________ stain, a method of staining that differentiates bacteria according to the chemical composition of their cell walls.

A specimen may be directly viewed as a(n) ________ ________, which is a preparation of a specimen in a liquid that allows the organisms to remain alive and mobile while they are being identified.

The study of microorganisms is called ________.