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Which are not considered microorganisms?
Bacteria
Fungi
Rickettsiae
All are correct
Bacteria
Fungi
Rickettsiae
All are correct
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The physician would order a stool culture to confirm staphylococcal food poisoning. t/f
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Ch 49
Microbiology and Immunology
| Question | Answer |
|---|---|
| Which are not considered microorganisms? Bacteria Fungi Rickettsiae All are correct | All are correct |
| The physician would order a stool culture to confirm staphylococcal food poisoning. t/f | f |
| Diagnosis of a helminth infection requires a: stool sample for culture on differential media. stool sample for ova and parasite examination. skin biopsy specimen for fluorescent testing. blood sample for tissue culture. | stool sample for ova and parasite examination. |
| Malaria is diagnosed from a stained blood sample that is examined under the microscope for the protozoal parasite. t/f | t |
| Legionnaires’ disease is caused by a Gram-positive bacillus that causes a particular type of pneumonia. t/f | f |
| Negative rapid strep test results must be confirmed with a throat culture, because the rapid strep test is highly specific but not highly sensitive. t/f | t |
| Most pathogenic organisms remain viable at temperatures of ____°C. 37°C 0°C 25°C | 37°C |
| A urinary tract infection can be diagnosed if an organism isolated from a CCMS urine specimen is found in pure culture and is present in a quantity greater than: 100 cfu/mL of urine. 10,000 cfu/mL of urine. 100,000 cfu/mL of urine. | 100,000 cfu/mL of urine. |
| Which of the following infections is caused by a fungus? Pneumocystis pneumonia Pyloric ulcers Rocky Mountain spotted fever Toxic shock syndrome | Pneumocystis pneumonia |
| Which of the following tests is performed in the serology laboratory? Direct immunologic urine pregnancy test Indirect immunologic tests Strep test Influenza test | Indirect immunologic tests |
| Tightly coiled, spiral-shaped bacteria are called: spirilla. sarcinae. spirochetes. streptobacilli. | spirochetes. |
| Mycobacterium tuberculosis is the organism that causes tuberculosis and also is an anaerobe. t/f | f |
| An organism that is unlikely to be transmitted by airborne droplets is: Streptococcus pneumoniae. Legionella pneumophila. Neisseria meningitidis. Treponema pallidum. | Treponema pallidum. |
| The Gram reaction a bacterium exhibits are the result of its: cell membrane sugar content. chemical makeup of the cell wall. gelatinous capsule. waxlike cell wall lipids. | chemical makeup of the cell wall. |
| A chlamydia specimen must be transported to the laboratory on ice immediately after collection. t/f | t |
| Fungi are classified as: prokaryote. protozoa. eukaryote. parasite. | eukaryote. |
| Bacterial endospores allow a microorganism to survive harsh environments. t/f | t |
| When bacteria are found in grapelike clusters, which of the following prefixes is used? Strepto- Diplo- Staphylo- Tetrads | Staphylo- |
| Specimens should be collected during the acute phase of an illness and 24 hours after antibiotics are prescribed. t/f | f |
| Tinea pedis is a fungal infection of the feet. t/f | t |
| Which of the following CLIA-waived serology tests can be performed by a medical assistant to detect antibodies to a specific pathogen? Infectious mononucleosis H. pylori Lyme disease HIV All are correct | All are correct |
| The growth of only one microorganism on a nutrient surface or culture is the definition for which of the following terms or phrases? Subcultured Pure culture Streaked for isolation Hemolysis | Pure culture |
| The term which means “in glass” or “in the laboratory” because it is not occurring in a living body. Extracellular Intracellular In vivo In vitro | In vitro |
| Microscopically, a sputum specimen containing positive AFB appears: pink-red. baby blue. purple. green. | pink-red. |
| Most pathogenic organisms prefer temperatures around 37°C and remain viable for up to 72 hours if held at room temperature or refrigerator temperature. t/f | t |
| An organism that is unlikely to be transmitted by airborne droplets is: Streptococcus pneumoniae. Legionella pneumophila. Neisseria meningitidis. Treponema pallidum. | Treponema pallidum. |
| The Epstein-Barr virus causes mononucleosis. t/f | t |
| An organism that is unlikely to be transmitted by sexual contact is: Neisseria gonorrhoeae. T. pallidum. Chlamydia trachomatis. Clostridium botulinum. | Clostridium botulinum. |
| Cultures for gonorrhea should be kept at room temperature. t/f | t |
| Which color indicates Gram-positive bacteria? Pink Purple Blue Green | Purple |
| Members of a class of invertebrate animals that include insects, crustaceans, and arachnids. Arthropod Parasite Helminth Bacteria | Arthropod |
| Bacteria are classified as: prokaryote. protozoa. eukaryote. parasite. | prokaryote. |
| 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 are correct | All are correct |
| 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 |
| Mycobacterium tuberculosis is the organism that causes tuberculosis and also is an anaerobe. t/f | f |
| Molecules that are needed for metabolism, examples include carbohydrates, lipids, and proteins. Yeast Mordant Macromolecules Extract | Macromolecules |
| The rapid detection test that assists in the diagnosis of stomach ulcers detects: Clostridium perfringens. E. coli. Helicobacter pylori. Streptococcus pyogenes. | Helicobacter pylori. |
| A Gram-positive cell has a thick layer of peptidoglycan with no lipid layer surrounding it. t/f | t |
| 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 are correct | All are correct |
| Specimens should be collected during the acute phase of an illness and 24 hours after antibiotics are prescribed. t/f | f |
| Referring to antimicrobial susceptibility testing, which of the following labels would indicate that the antibiotic is effective against the organism in that particular concentration in vitro? S R I None are correct | S |
| 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 considered when treating the infection. | should be considered when treating the infection. |
| 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. |
| Gram-negative bacteria will stain what color? Blue/violet Pinkish-red Do not stain well with Gram’s stain Pink | Pinkish-red |
| Which are not considered microorganisms? Bacteria Fungi Rickettsiae All are correct | All are correct |
| Which of the following will need a blood sample for diagnosis? Salmonella Tetanus Strep throat All are correct | Tetanus |
| An anaerobic organism is most likely to be isolated from a(n): abscess. sputum. skin scraping. throat. | abscess. |
| A cellulose tape test for pinworms requires: a length of cellulose tape to be touched against the anal folds to collect worms and a microscope to view the eggs that have adhered to a length of cellulose tape. | a length of cellulose tape to be touched against the anal folds to collect worms and a microscope to view the eggs that have adhered to a length of cellulose tape. |
| Mycoplasmas have more PG in their cell walls than any other pathogen. t/f | f |
| Microscopically, a Gram-negative bacilli appears as: purple spheres. purple rods. pink (red) spheres. pink (red) rods. | pink (red) rods. |
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