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Quiz 5

Terms in this set (34)

A feature that may be found in viruses but never in bacteria is
May contain an RNA genome
How do all viruses differ from bacteria
Viruses are not composed of cells.
Viruses are the only known infectious agents that are obligatory intracellular parasites.
False
The morphological types of viruses are ultimately determined by the
Nucleic acid
Viruses that utilize reverse transcriptase belong to the virus families
Hepadnaviridae and Retroviridae.
Which of the following is NOT utilized to culture viruses
culture media
Each of the following can be used for the detection and/or identification of viruses except
Fermentation testd
Lysogeny can result in all of the following EXCEPT
immunity to reinfection by any phage.
An envelope is acquired during which of the following steps
release
Which of the following places these items in the correct order for DNA-virus replication?
1. Maturation
2. DNA synthesis
3. Transcription
4. Translation
2:3:4:1
Most RNA viruses carry which of the following enzymes
RNA-dependent RNA polymerase
Dogs do not get measles because their cells lack the correct receptor sites for that virus.
True
Oncogenic viruses
cause tumors to develop
Which of the following statements regarding latent viral infections is true
Latent infections can persist for years in an individual without causing any symptoms.
A persistent infection is one in which
the disease process occurs gradually over a long period.
An infectious protein is a
prion
Which of the following statements regarding prion diseases is true
Normal host cellular prion proteins (PrP^c) are converted into scrapie proteins (PrP^sc)
Which of the following statements concerning pathology, infection, and disease is true
Pathology refers to the study of structural and functional changes that occur in the body as a result of a disease.
Transient microbiota differ from normal microbiota in that transient microbiota
are present for a relatively short time
Which of the following is NOT an example of microbial antagonism
bacteria causing disease
The yeast Candida albicans does NOT normally cause disease because of
Antagonistic bacteria
The rise in herd immunity amongst a population can be directly attributed to
vaccinations
Which of the following definitions is INCORRECT
secondary infection: a long-lasting illness
Which of the following is NOT a predisposing factor of disease
All of these are predisposing factors of disease (genetic background, climate, occupation, lifestyle)
Which of the following statements about the development of infectious diseases is correct
The period of convalescence is the time during which the person regains health and fully recovers (back to the pre-disease state).
Biological transmission differs from mechanical transmission in that biological transmission
involves reproduction of a pathogen in an arthropod vector prior to transmission
A cold transmitted by a facial tissue is an example of
fomite
Which one of the following does NOT contribute to the incidence of healthcare associated infections
Gram-negative cell walls
Which do the following can contribute to postoperative infections
All are correct (normal microbiota on the operating room staff, errors in aseptic technique, antibiotic resistance, using syringes more than once)
As a health care worker, you are keenly aware of how important it is to avoid harming patients. You worry about inadvertently transmitting an infectious disease to an already compromised individual. According to the CDC, what is the most important thing you can do to avoid this?
Wash my hands before interacting with any patient.
Emergence of infectious diseases can be attributed to all of the following EXCEPT
The emergence of infectious diseases can be attributed to all of these
Which of the following statements is FALSE
The M in MRSA stands for mannitol.
The CDC is located in
Atlanta, GA
The science that deals with when diseases occur and how they are transmitted is called
epidemiology
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