Question 1

The natural habitat of Chryseobacterium sp.can best be described as&#10;A)the mucous membranes of animals.&#10;B)the gastrointestinal tract of humans and other animals.&#10;C)the natural environment.&#10;D)the genitourinary tract of animals.

Accepted Answer

As environmental inhabitants, these organisms may be found in various niches. Most notable in terms of clinical relevance is their ability to survive in hospital environments, especially in moist areas. Although they are not considered part of normal human flora, these species can colonize a patient's respiratory tract during hospitalization, probably as a result of exposure to a contaminated water source or medical devices.

Question 2

Choose the habitat of the bacterium Chryseobacterium.&#10;A)Environmental&#10;B)Animal oral and respiratory flora&#10;C)Environmental, cold climates&#10;D)Human normal flora

Accepted Answer

The organisms that constitute the genera discussed in this chapter are environmental inhabitants that are occasionally encountered in human specimens. As environmental inhabitants, these organisms may be found in various niches in the environment. Most notable in terms of clinical relevance is their ability to survive in hospital environments, especially in moist areas.

Question 3

Choose the habitat of the bacterium Agrobacterium.&#10;A)Environmental&#10;B)Animal oral and respiratory flora&#10;C)Environmental, cold climates&#10;D)Human normal flora

Accepted Answer

The organisms that constitute the genera discussed in this chapter are environmental inhabitants that are occasionally encountered in human specimens. As environmental inhabitants, these organisms may be found in various niches in the environment. Most notable in terms of clinical relevance is their ability to survive in hospital environments, especially in moist areas.

Question 4

Among the yellow-pigmented, oxidase-positive, glucose oxidizers that are occasionally encountered in human specimens are&#10;A)Chryseobacterium meningosepticum.&#10;B)Flavobacterium meningosepticum.&#10;C)Sphingobacterium spiritivorum.&#10;D)Empedobacter brevis.&#10;E)All of the above are correct.

Accepted Answer

The organisms that constitute the genera discussed in this chapter are environmental inhabitants that are occasionally encountered in human specimens. They are considered together because they share similar physiologic and morphologic characteristics, that is, most are yellow-pigmented, oxidase-positive, glucose oxidizers that grow on MacConkey agar.

Question 5

Valid susceptibility testing methods are not available for&#10;A)Enterobacteriaceae.&#10;B)Chryseobacterium.&#10;C)Pseudomonas.&#10;D)Staphylococcus.

Accepted Answer

Validated susceptibility testing methods do not exist for Chryseobacterium or for the other organisms in this chapter. Although they will grow on the media and under the conditions recommended for testing the more commonly encountered bacteria, the ability to grow and the ability to detect important antimicrobial resistances are not the same thing. Therefore the lack of validated in vitro susceptibility testing methods does not allow definitive treatment and testing guidelines to be given for any of the organisms listed.

Question 6

Choose the habitat of the bacterium Empedobacter.&#10;A)Environmental&#10;B)Animal oral and respiratory flora&#10;C)Environmental, cold climates&#10;D)Human normal flora

Accepted Answer

The organisms that constitute the genera discussed in this chapter are environmental inhabitants that are occasionally encountered in human specimens. As environmental inhabitants, these organisms may be found in various niches in the environment. Most notable in terms of clinical relevance is their ability to survive in hospital environments, especially in moist areas.

Question 7

Choose the habitat of the bacterium Sphingobacterium.&#10;A)Environmental&#10;B)Animal oral and respiratory flora&#10;C)Environmental, cold climates&#10;D)Human normal flora

Accepted Answer

The organisms that constitute the genera discussed in this chapter are environmental inhabitants that are occasionally encountered in human specimens. As environmental inhabitants, these organisms may be found in various niches in the environment. Most notable in terms of clinical relevance is their ability to survive in hospital environments, especially in moist areas.

Deck 23: Chryseobacterium, Sphingobacterium, and Similar Organisms