Biology 2e
2nd Edition
ISBN: 9781947172517
Author: Matthew Douglas, Jung Choi, Mary Ann Clark
Publisher: OpenStax
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Textbook Question
Chapter 21, Problem 17RQ
Which of the following is NOT used to treat active viral disease?
- Vaccines
- Antiviral drugs
- Antibiotics
- Phage therapy
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Which of the following is NOT used to treat active viral disease? a. Vaccines b. Antiviral drugs c. Antibiotics d. Phage therapy
Which of the following is not a characteristic of viruses that makes them difficult for drug development?
They have a very simple structure.
They are smaller than the host cells.
They use the host's machinery for replication.
Which of the following statements about viruses is false? a. Viruses require a host cell to reproduce. b. Viruses are sensitive to interferons. c. Viral infections can generally be controlled with antibiotics. d. Viruses encode their own genome.
Chapter 21 Solutions
Biology 2e
Ch. 21 - Figure 21.5 Which of the following statements...Ch. 21 - Figure 21.8 Influenza virus is packaged in a viral...Ch. 21 - Figure 21.10 Which of the following statements is...Ch. 21 - Which statement is true? A virion contains DNA and...Ch. 21 - The viral______play(s) a role in attaching a...Ch. 21 - Viruses. all have a round shape cannot have a long...Ch. 21 - The observation that the bacteria genus Chlamydia...Ch. 21 - A scientist discovers a new virus with a linear,...Ch. 21 - Which statement is not true of viral replication?...Ch. 21 - Which statement is true of viral replication? In...
Ch. 21 - Which statement is true of reverse transcriptase?...Ch. 21 - Oncogenic virus cores can be. RNA DNA neither RNA...Ch. 21 - Which is true of DNA viruses? They use the host...Ch. 21 - A bacteriophage can infect the lungs viruses...Ch. 21 - People with the CCR5?32 mutation of a T-cell...Ch. 21 - An apple grower notices that several of his apple...Ch. 21 - Which of the following is NOT used to treat active...Ch. 21 - Vaccines. are similar to viroids are only needed...Ch. 21 - A patient presents at the clinic with an acute...Ch. 21 - Which of the following is not associated with...Ch. 21 - Which statement is true of viroids? They are...Ch. 21 - The first electron micrograph of a virus (tobacco...Ch. 21 - Varicella-zoster virus is a double-stranded DNA...Ch. 21 - Classify the Rabies virus (a rhabdovirus family...Ch. 21 - Why can’t dogs catch the measles?Ch. 21 - One of the first and most important targets for...Ch. 21 - In this section, you were introduced to different...Ch. 21 - Although plant viruses cannot infect humans, what...Ch. 21 - A bacteriophage with a lytic life cycle develops a...Ch. 21 - Why is immunization after being bitten by a rabid...Ch. 21 - The vaccine Gardasil that targets human papilloma...Ch. 21 - Prions are responsible for variant Creutzfeldt...Ch. 21 - How are viroids like viruses?Ch. 21 - A botanist notices that a tomato plant looks...
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- The genome of a virus consists of (a) DNA (b) RNA (c) prions (d) DNA and RNA (e) DNA or RNAarrow_forwardWhy would viral genome integration into host cell integration be advantageous to a virus? It enables the virus to kill the cell. It allows the virus to infect cells it would not normally infect. It allows the virus to be passed on to future generations of host cells. It allows the virus to destroy the host cell's DNA. It speeds up viral replication.arrow_forwardWhich of the following are not DNA viruses?a) Hepatitis B virusb) Influenza A virusc) CMV virusd) Parvovirusarrow_forward
- Which of the following effects do antiviral drugs not have?a. destroying extracellular virusesb. stopping virus synthesisc. inhibiting virus maturationd. blocking virus receptorsarrow_forwardWhich of the following describes why soap is effective at killing animal virus particles Soap Disrupts DNA replication Soap Disrupts RNA replication Soap Disrupts the envelope of the virus Soap Denatures proteinsarrow_forwardWhich of the following processes occurs in both lytic and nonlytic viral infections?(i) Infected cell ruptures to release viral particles.(ii) Viral mRNAs are transcribed by the host-cell translation machinery.(iii) Viral proteins and nucleic acids are packaged to produce virions.arrow_forward
- Which of the following is not a component of HIV?a) Proteasesb) Ribosomesc) Reverse transcriptased) Proteine) RNAarrow_forwardSome viral detection techniques involve a serological assay. This assay looks for the presence of antibodies to virus proteins. virus particles under a microscope. viral nucleic acids. host cells that have undergone lysis.arrow_forwardWhich of the following is true? A. Viruses cannot reproduce outside a host cell. B. Prions are infectious proteins. C. Viroids lack a protein coat. D. Some viruses cause cancer. E. All of the above.arrow_forward
- Which of the following viruses is not an oncogenic DNA virus? -Retroviridae -Poxviridae -Herpesviridae -Papovaviridae -Adenoviridaearrow_forwardThe --------------- retrovirus contains a ______________ genome: Select one: a. chicken pox, circular DNA b. Sars CoVII, double-stranded RNA c. measles, double-stranded DNA d. HIV, Single-stranded RNAarrow_forwardAfter a virus has entered its host, what factor usually determines the manner (or steps) in which the viral genome is copied and the viral enzymes are produced? the size of the virion the number of infecting virus particles the type of viral genome the type of viral capsidarrow_forward
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