Answer:
Step-by-step explanation:
Which of the following body sites normally have large numbers of resident microbiota?
- Liver
- Large intestine
- Blood
- Throat
- Brain
- Nose
- Skin
- Vagina
- Large intestine
- Throat
- Nose
- Skin
- Vagina
A microorganism that is most often harmless but may occasionally cause infection and disease if the host defenses are compromised is referred to as an ________________ pathogen.
Opportunistic
Which of the following are genera of gram-positive cocci frequently found as resident microbiota in humans?
- Enterococcus
- Streptococcus
- Staphylococcus
- Neisseria
- Escherichia
- Enterococcus
- Streptococcus
- Staphylococcus
Which of the following infections are frequently caused by Staphylococcus species as well as Streptococcus species?
- Pharyngitis
- Urinary tract infection
- Pneumonia
- Diarrhea
- Abscess
- Endocarditis
- Urinary tract infection
- Pneumonia
- Abscess
- Endocarditis
Which of the three tests conducted in this identification process did not require the use of an incubator?
- Coagulase test
- Catalase test
- Novobiocin sensitivity test
- Mannitol salt agar plate
Catalase test
Based on this flowchart, what is true about Staphylococcus saprophyticus?
- Possesses catalase enzyme
- Does not possess coagulase enzyme
- May not ferment mannitol
What would this organism look like under the microscope?
Purple spherical bacteria in clusters
Based on the result recorded for the mannitol salt agar plate, what color was the medium after incubation?
Pink
What test eliminated streptococci as potential agents in this case?
Catalase test
The following lab activities are frequently done in the medical microbiology lab. Match each of the lab activities with their purpose.
- Culture - Uses several different types of media to grow bacteria from patient specimens
- Identification - Uses a variety of tests and media to determine the genus and species of a bacterial isolate
- Sensitivity - Tests a microorganism with a battery of different antibiotics to determine which antibiotics are most likely to control or eliminate the infection
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