Chapter 42 Flashcards
If a spill should occur in the lab, which of the the following agents is used for cleanup:
a. 10% phenol b. 2% phenol c. 3% bleach d. 10% bleach
d. 10% bleach
Which of the following is NOT included in inoculating techniques?
a. Lawn streak b. Loop c. Colony count d. Random streak
d. Random streak
What is the organism that causes strep throat?
a. Group A, alpha-hemolytic streptococcus b. Group B, alpha-hemolytic streptococcus c. Group A, beta-hemolytic streptococcus d. Group B, beta-hemolytic streptococcus
c. Group A, beta-hemolytic streptococcus
Which of the following terms best describes infections acquired in hospitals?
a. Bacterial b. Serratia c. Nosocomial d. Floral
c. Nosocomial
Which of the following methods is used for maintaining an anaerobic condition?
a. Petri dish b. Safety hood c. Incubator d. Gas pack jar
d. Gas pack jar
Which of the following should be used when obtaining a nasopharyngeal collection for a culture?
a. Sterile tongue depressor b. Sterile applicator stick c. Special swab on a thin wire d. None of the above
c. Special swab on a thin wire
Which of the following is NOT part of a quality control program in microbiology?
a. Make the SDS available to reference. b. Update the laboratory manual daily. c. Do not use media past the shelf life. d. Monitor all equipment with temperature controls daily.
b. Update the laboratory manual daily.
Which of the following best describes the use of a culturette tube?
a. Transporting stool samples b. Keeping the swab moist c. Transporting blood specimens d. All the above
b. Keeping the swab moist
Which of the following best describes when a safety hood is mandatory in laboratory use?
a. Performing a culture with a potential of aerosol b. Examining a stool specimen c. Working with a foul-smelling specimen d. Performing an anaerobic culture
a. Performing a culture with a potential of aerosol
Which of the following bacteria are purple rods when the staining process is complete?
a. Gram-positive bacilli b. Gram-positive cocci c. Gram-negative bacilli d. Gram-negative spirilla
a. Gram-positive bacilli
Which of the following best describes how a bacterium is determined to be Gram positive or negative?
a. Absence of cytoplasm b. Presence of ribosomes c. Nature of the cytoplasm d. Ability to retain or lose color
d. Ability to retain or lose color
Media that that contains substances that alter the appearance of some organisms and not others is called:
a. Differential media b. Selective media c. Basic media d. Enriched media
a. Differential media
When a parasite test comes back negative for worms, how many confirmatory tests should be performed?
a. 5 b. 8 c. 7 d. several
d. several
After the agar plate has been inoculated and properly labeled, what must you do with the plate?
a. Leave it right-side-up, and place in the proper environment for growth. b. Turn it upside down, and place in the proper environment for growth. c. Place it back with the other agar plates in the original package. d. Nothing, agar plates require nothing special.
b. Turn it upside down, and place in the proper environment for growth.
When using KOH on a wet mount, what does the KOH do?
a. Clears debris b. Stains the organism c. Makes objects look brighter d. Destroys the fungus
a. Clears debris
When a patient has a bacterial infection that is not responding to the antibiotic, what test might the physician order?
a. Differential stain b. C & S c. KOH d. All the above
b. C & S
Which of the following best describes placing a sample of body secretions on a special medium to allow bacteria to grow?
a. Holding media b. Sensitivity test c. Mordant d. Culture
d. Culture
Mycology is the study of
a. Protozoa b. Algae c. Bacteria d. Fungi
d. Fungi
Which of the following is the nuclear material in all cells?
a. Ribosomes b. DNA c. Cytoplasm d. RNA
b. DNA
Which of the following is the KOH used for testing?
a. Acid-fast bacteria b. Fungi and spores c. Stool specimens d. Gram positive bacteria
b. Fungi and spores
Which of the following is NOT an appropriate action when handling microbiology specimens?
a. Handle the specimen as if it is not contaminated. b. Look for leaks on the outside of the transporting container. c. Use the appropriate container when sending specimens to an outside lab. d. Wear gloves.
a. Handle the specimen as if it is not contaminated.
Which of the following is the type of stain that is often referred to as a specific stain and that allows for microscopic examination of acid-fast organisms?
a. Gram b. Acid-fast c. Simple d. None of the above
b. Acid-fast
A wet mount is used to:
a. Stain bacteria b. Suspend the organism in a liquid to study c. Examine organisms under a microscope d. Both b and c
d. Both b and c
Which of the following best describes the use of the colony streaking technique?
a. Grow Shigella b. Dilute bacteria c. Grow yeast d. Plate urine cultures
d. Plate urine cultures
