48

A urinary tract infection can be diagnosed if an organism isolated from a CCMS specimen is found in pure culture and is present in a quantity greater than ________ per milliliter of urine. -10 -100 -10,000 -100,000

100,000

Which of the following cfu results would indicate a UTI is likely? - <10,000 cfu/mL of urine -10,000 to 100,000 cfu/mL of urine - 100,000 cfu/mL of urine - None of the above

100,000 cfu/mL of urine Positive: 100,000 cfu/mL of urine; a UTI is likely. Normal: 10,000 cfu/mL of urine; no urinary tract infection (UTI) is present. Borderline: 10,000 to 100,000 cfu/mL of urine; a chronic or relapsing infection may be present, and the test should be repeated.

Beta hemolysis - is best detected on a sheep's blood medium. - is caused by hemolysis of blood cells. -refers to a clear zone around bacterial colonies growing on a sheep's blood medium. - All of the above

All of the above

Which of the following CLIA-waived serology tests can be performed by a medical assistant to detect antibodies to a specific pathogen? - Infectious mononucleosis - Helicobacter pylori - Lyme disease - HIV -All of the above

All of the above

A cellulose tape test for pinworms requires -a thin specimen of stool to be spread on cellulose tape to immobilize the worms. -a length of cellulose tape to be touched against the anal folds to collect worms. -temporarily taping the anus closed to trap the worms. -a microscope to view the eggs that have adhered to a length of cellulose tape. - B and D

B and D

Which of the following pathogenic organisms can be identified in sputum samples? -Pathogenic fungi -Pathogenic parasites -Pathogenic viruses -Both A and B - All of the above

Both A and B

When writing the name of a microorganism, which of the following rules applies to the genus? - Begins with a capital letter - Begins with a lowercase letter - May be represented by a single letter - Both A and C

Both A and C

Specimens should be collected during the acute phase of an illness and 24 hours after antibiotics are prescribed.

False Specimens should be collected before antibiotics are prescribed to make sure the microorganism can be cultured if necessary.

Which of the following is true about gonorrhea? - Gram-negative cocci found in pairs - Gram-positive cocci in clusters -Gram-positive cocci in chains -Gram-negative spirilla

Gram-negative cocci found in pairs

The rapid detection test that assists in the diagnosis of stomach ulcers detects - Clostridium perfringens. - Escherichia coli. - Helicobacter pylori. - Streptococcus pyogenes.

Helicobacter pylori

Which are not considered microorganisms? -Bacteria -Fungi -Helminths -Rickettsiae

Helminths

Which of the following tests is performed in the serology laboratory? - Direct immunologic urine pregnancy test -Indirect immunologic test - Strep test -Influenza test - Both C and D

Indirect immunologic test

Which of the following infections is caused by a fungus? - Pneumocystis pneumonia - Pyloric ulcers - Rocky Mountain spotted fever - Toxic shock syndrome

Pneumocystis pneumonia Pneumocystis pneumonia is a fungal infection that is frequently seen in AIDS patients.

When bacteria are found in grapelike clusters, which of the following prefixes is used? -strepto -diplo -staphylo -Tetrads -Sarcinae

Staphylo When bacteria are found in grapelike clusters, the prefix staphylo- is used. When they are found in a chain formation, the prefix strepto- is used. When bacteria are found in pairs, the prefix diplo- is used, and cocci in packets of four are called tetrads and in packets of eight or 16 are called sarcinae.

Cultures for which two organisms should not be refrigerated after collection? - Escherichia coli and Neisseria gonorrhoeae - Streptococcus pyogenes and N. gonorrhoeae - S. pyogenes and Staphylococcus aureus

Streptococcus pyogenes and N. gonorrhoeae Streptococcus pyogenes and N. gonorrhoeae specimens should not be refrigerated after collection.

A chlamydia specimen must be transported to the laboratory on ice immediately after collection.

TRUE

A nasopharyngeal swab is used to make the diagnosis of RSV.

TRUE

An organism that is unlikely to be transmitted by airborne droplets is -Streptococcus pneumoniae. - Legionella pneumophila. - Neisseria meningitidis. - Treponema pallidum.

Treponema pallidum. Treponema pallidum causes syphilis, which is a sexually transmitted spirochete; the other organisms are airborne.

Cultures for gonorrhea and strep throat should be kept at room temperature.

True

The Epstein-Barr virus causes mononucleosis.

True

Tinea pedis is a fungal infection of the feet.

True

Both bacteria and fungi can be - multicellular. - eukaryotes. - prokaryotes. - unicellular.

Unicellular

Sensitivity testing is used to determine -the susceptibility of a microorganism to antiviral treatment. -the patient's susceptibility to a particular pathogen. -a pathogen's susceptibility to a particular antibiotic. - All of the above

a pathogen's susceptibility to a particular antibiotic. "Sensitivity" refers to a test to determine the organism's susceptibility to certain antibiotics.

An anaerobic organism is most likely to be isolated from a(n) - abscess. - sputum. - skin scraping. -throat.

abscess

An organism that is flexible as far as its oxygen requirements are concerned is called a(n) - aerobe. - anaerobe. - facultative aerobe. - facultative anaerobe.

facultative anaerobe.

The prefix staphylo- means that bacteria appear - in coiled springs. - rod shaped. - in grapelike clusters. - in pairs.

in grapelike clusters

The microbiology laboratory report for Mrs. Wallace's urine culture lists eight antibiotics, five of which are followed by the letter "S." This means that these antibiotics - should be avoided when treating the infection. -should be considered when treating the infection. -are likely to cause sensitivity or allergy in the patient. -should be retested with a more sensitive method.

should be considered when treating the infection

In the scientific name Escherichia coli, the name coli indicates the -Species -genus -shape -B and C

species The binomial system assigns two names; the first name is the genus, and the second name is the species.

Tightly coiled, spiral-shaped bacteria are called - spirilla. - sarcinae. - spirochetes. - streptobacilli.

spirochetes

Diagnosis of a helminth infection requires a -stool sample for culture on differential media. - stool sample for O&P examination. - skin biopsy specimen for fluorescent testing. - blood sample for tissue culture.

stool sample for O&P examination.