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1. Introduction to Microbiology3h 22m
2. Disproving Spontaneous Generation1h 18m
3. Chemical Principles of Microbiology3h 38m
4. Water1h 28m
5. Molecules of Microbiology2h 23m
6. Cell Membrane & Transport3h 28m
7. Prokaryotic Cell Structures & Functions5h 52m
8. Eukaryotic Cell Structures & Functions2h 18m
9. Microscopes2h 46m
10. Dynamics of Microbial Growth4h 36m
11. Controlling Microbial Growth4h 10m
12. Microbial Metabolism5h 16m
13. Photosynthesis2h 31m
14. DNA Replication2h 25m
15. Central Dogma & Gene Regulation7h 14m
16. Microbial Genetics4h 44m
17. Biotechnology3h 0m
18. Viruses, Viroids, & Prions4h 56m
19. Innate Immunity7h 15m
20. Adaptive Immunity7h 14m
21. Principles of Disease6h 57m

18. Viruses, Viroids, & Prions

Introduction to Viruses

Microbiology

18. Viruses, Viroids, & Prions

Introduction to Viruses

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Open Question

An RNA virus with an antisense or negative strand must have which of the following enzymes to replicate?
a. Reverse transcriptase
b. Host DNA polymerase
c. RNA-dependent RNA polymerase
d. Host RNA polymerase

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Related Practice

Open Question

Recall from Chapter 1 that Koch's postulates are used to determine the etiology of a

disease. Why is it difficult to determine the etiology of

a. a viral infection, such as influenza?

b. cancer?

Open Question

Which of the following statements is false?

a. Viruses contain DNA or RNA.

b. The nucleic acid of a virus is surrounded by a protein coat.

c. Viruses multiply inside living cells using viral mRNA, tRNA, and ribosomes.

d. Viruses cause the synthesis of specialized infectious elements.

e. Viruses multiply inside living cells.

Open Question

Define the following terms, and give an example of how each reaction is used diagnostically:

a. viral hemagglutination

b. hemagglutination inhibition

c. passive agglutination

Open Question

Which of the following is a potential feature of an animal virus? Select all that apply.

a. Presence of an envelope

b. Presence of a naked icosahedral capsid

c. Ability to inject naked RNA into the host cell

d. Ability to integrate into the host cell’s genome

e. Ability to cause host cell lysis

f. Ability to build DNA from an RNA template

Open Question

A young mother who has hepatitis B is under your care. Your main concern is to prevent the spread of the virus from infected cells to healthy ones. You would recommend (NCLEX/HESI/TEAS)

a. acyclovir.

b. Retrovir.

c. interferon.

d. Valtrex.

Open Question

Assume a new enveloped RNA virus is causing an epidemic. Which of the following may be useful to manage the disease? Select all that apply.

a. Injectable antibodies

b. Interferons

c. Antibiotics

d. Nucleoside analogs

Open Question

Compare and contrast production of viral proteins for dsDNA viruses and ssRNA+ viruses.

Open Question

An accidental needle stick occurs during routine treatment of an HIV-positive patient who arrives at your clinic. Immediate administration of _______________ can block viral entry.

a. enfuvirtide

b. vapendavir

c. AZT

d. amantadine

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