Which of the following bacterial diseases of the respiratory system can be prevented by vaccine?
A. bacterial sinusitis
C. Pseudomonas pneumonia
Facultative intracellular pathogens
A. can live either inside or outside host cells.
B. are killed by fusion of the phagosome with the lysosome.
C. do not require oxygen to survive.
D. live exclusively inside host cells.
Biofilms are clinically relevant because
A. they are organized, high-density communities of cells.
B. they coordinate their behavior through cell-cell communication.
C. bacteria in biofilms are more resistant to antimicrobial drugs.
D. they interfere with cytokine production.
All of the following are true about Candida except
A. it can cause serious problems in patients who are immunocompromised.
B. it is a dimorphic yeast.
C. it is found in the gastrointestinal tract, vaginal tract, oral cavity, and skin.
D. it is not part of the normal biota.
Latent herpes virus DNA produces microRNAs. The purpose of these microRNAs is to
A. interfere with host cell apoptosis.
B. kill the host cell.
C. make more virions.
D. make toxins.
The white enanthem, known as Koplik's spots, shown in the mouth of this individual is followed by the maculopapular rash shown in the image of a child’s back. These signs are indicative of
Dr. P. Marazzi / Science Source; Biophoto
A. German measles.
B. roseola infantum.
C. fifth disease.