Chapter 46 Review

A urine specimen must be processed or refrigerated within what time period after collection?

1 hour

Bacterial cells can double in number in how many minutes?

15 to 30

Which of the following is a gelatin-like substance derived from seaweed, which gives culture medium its consistency?

Agar

Which of the following steps is involved with diagnosing an infection?

All of these are correct Examine the patient Obtain specimens Examine specimens Culture the specimen

Infecting microorganisms may cause which of the following symptoms?

All of these are correct Local swelling Pain Redness Weakness

What information should be included on a specimen label?

All of these are correct Patient's name Source of specimen Date and time Doctor's name

Which step in the gram stain process is essential for differentiation between gram-positive and gram-negative bacteria?

Decolorizing

Infectious mononucleosis is caused by which of the following?

Epstein-Barr virus

Which term refers to a living microorganism or its toxin that may cause human disease?

Etiologic agent

A KOH mount is used to detect which of the following?

Fungi

Athlete's foot, thrush, and ringworm are all caused by types of

Fungi

Which of the following is a pathogenic fungus?

Histoplasma capsulatum

Which of the following examination methods is used when the physician detects a fungal skin infection?

KOH mount

A substance that fixes a stain, keeping it from being washed away, is a

Mordant

A properly collected sputum sample should contain which of the following?

Mucus

An organism that lives on or in another organism and uses that other organism for its own nourishment is a(n)

Parasite

Organisms capable of causing disease are known as

Pathogens

Which of the following are infectious particles that lack nucleic acid and are made of protein?

Prions

Trichomoniasis vaginitis, a type of STI, is caused by which of the following types of microorganism?

Protozoa

Malaria, amebic dysentery, and trichomoniasis are caused by which of the following?

Protozoans

Microorganisms normally found on the skin and other body tissues are known as

Resident normal flora

Which type of specimen is collected by having the patient expectorate mucus?

Sputum

What is the most common device used for obtaining cultures?

Sterile swab

Which of the following is an appropriate guideline for collecting specimens?

The specimen label includes the patient's name and number, source of specimen, date and time, doctor's name, and yourinitials.

How many main objectives do you have when you collect and transport a microbiology specimen to an outside office?

Three

How many bags or containers are used when preparing microbiologic specimens for transport outside of the office?

Two

Which of the following is an example of a subcellular microorganism?

Virus

Which of the following is NOT a common systemic complaint associated with AIDS?

Weight gain

Which of the following is the most useful method of determining if a microorganism is motile?

Wet mount

Bacteria that grow best in the presence of air are referred to as:

aerobes

A procedure that involves culturing a specimen and then testing the isolated bacterium's susceptibility to certain antibiotics is a (an):

culture and sensitivity.

Hepatitis infected patients may be asymptomatic. If signs and symptoms are present, they may include all of the following EXCEPT:

diarrhea.

An infection caused by multicellular parasites is known as an:

infestation

All of the following are beneficial functions of bacteria in the intestines except:

inflammation

When preparing a specimen for staining, it is important that the specimen be heat-fixed in order to:

keep the specimen from washing away during staining.

Multicelled organisms that produce spores are known as:

molds

An organism that lives on or in another organism and uses that other organism for food, or for some other advantage, to the detriment of the host organism is known as a:

parasite

All of the following information should be included on a laboratory requisition form except:

prognosis

Microorganisms with a simple cell structure, no nucleus, and no organelles in the cytoplasm are:

prokaryotes

Microorganisms normally found on the skin and within the human body that perform a number of important functions and typically do not cause disease are known as:

resident normal flora

A specimen that is spread thinly across a slide in order to be viewed under a microscope is a

smear

All of the following are types of microorganisms EXCEPT:

subcellular