MIRCO Chapter 5: Viruses Flashcards
Chapter 5 NCLEX Prep
- Which statements are accurate regarding properties of viruses?
Select all that apply.
a. Viruses are cell structures that are compact and economical.
b. Viruses represent active molecules outside the host cell.
c. The basic structure of a virus is composed simply of a protein shell.
d. Viruses do not contain enzymes for most metabolic processes.
e. Viruses contain either DNA or RNA.
- c. The basic structure of a virus is composed simply of a protein shell.
d. Viruses do not contain enzymes for most metabolic processes.
e. Viruses contain either DNA or RNA.
Chapter 5: Viruses
Chapter 5 NCLEX Prep
- Genital herpes is an example of an infection that
a. can be present in a latent state.
b. results from the fusion of multiple host cells into single large cells.
c. is a provirus.
d. causes disease only once.
- a. can be present in a latent state.
Chapter 5: Viruses
Chapter 5 NCLEX Prep
- What diagnostic methods would be used to differentiate between bacterial and viral infections in the clinical setting?
Select all that apply.
a. determination of whether patient is experiencing nausea or vomiting
b. blood cultures
c. rapid strep testing
d. initiation of antibiotic therapy
e. CBC with differential
- b. blood cultures
c. rapid strep testing
e. CBC with differential
Chapter 5: Viruses
Chapter 5 NCLEX Prep
- Bird embryos are used to cultivate viruses because they
a. provide a sterile environment.
b. provide nourishment needed for replication.
c. are self-supporting units.
d. all of the above
- d. all of the above
Chapter 5: Viruses
Chapter 5 NCLEX Prep
- Which of the following is a known association between viruses and cancers?
a. Papillomavirus causes brain cancer.
b. Infection with herpesvirus leads to AIDS.
c. Hepatitis B is associated with liver cancer.
d. Papillomavirus is associated with gastric cancer.
- c. Hepatitis B is associated with liver cancer.
Chapter 5: Viruses
- When phage nucleic acid is incorporated into the nucleic acid of its host cell and is replicated when the host DNA is replicated, this is considered part of which cycle?
a. lytic cycle
b. virulence cycle
c. lysogenic cycle
d. cell cycle
e. multiplication cycle
- c. lysogenic cycle
Chapter 5: Viruses
- A virus that undergoes lysogeny is a/an
a. temperate phage.
b. intemperate phage.
c. T-even phage.
d. animal virus.
e. DNA virus.
- a. temperate phage.
Chapter 5: Viruses
- The nucleic acid of a virus is
a. DNA only.
b. RNA only.
c. both DNA and RNA.
d. either DNA or RNA.
- d. either DNA or RNA.
Chapter 5: Viruses
- The general steps in a viral multiplication cycle are
a. adsorption, penetration, synthesis, assembly, and release.
b. endocytosis, uncoating, replication, assembly, and budding.
c. adsorption, uncoating, duplication, assembly, and lysis.
d. endocytosis, penetration, replication, maturation, and exocytosis.
- a. adsorption, penetration, synthesis, assembly, and release.
Chapter 5: Viruses
- A prophage is an early stage in the development of a/an
a. bacterial virus.
b. poxvirus.
c. lytic virus.
d. enveloped virus.
- a. bacterial virus.
Chapter 5: Viruses
- In general, RNA viruses multiply in the cell _____________________, and DNA viruses multiply in the cell _____________________.
a. nucleus; cytoplasm
b. cytoplasm; nucleus
c. vesicles; ribosomes
d. endoplasmic reticulum; nucleolus
- b. cytoplasm; nucleus
Chapter 5: Viruses
- Viruses cannot be cultivated in
a. tissue culture.
b. bird embryos.
c. live mammals.
d. blood agar.
- d. blood agar.
Chapter 5: Viruses
- Clear patches in cell cultures that indicate sites of virus infection are called
a. plaques.
b. pocks.
c. colonies.
d. prions.
- a. plaques.
Chapter 5: Viruses
