Microbiology: A Systems Approach
4th Edition
ISBN: 9780073402437
Author: Marjorie Kelly Cowan Professor
Publisher: McGraw-Hill Education
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Chapter 6.3, Problem 8AYP
Compare and contrast the composition of a viral genome to that of a cellular organism’s genome.
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Chapter 6 Solutions
Microbiology: A Systems Approach
Ch. 6.1 - Describe the significance of viruses being...Ch. 6.2 - Summarize arguments on both sides of the debate...Ch. 6.2 - Identify effective terms to describe the behavior...Ch. 6.3 - Prob. 4AYPCh. 6.3 - Describe the function and structure(s) of viral...Ch. 6.3 - Distinguish between enveloped and naked viruses.Ch. 6.3 - Prob. 7AYPCh. 6.3 - Compare and contrast the composition of a viral...Ch. 6.3 - Diagram the possible nucleic acid configurations...Ch. 6.4 - Develop two arguments against assigning species...
Ch. 6.4 - Demonstrate how family and genus names in viruses...Ch. 6.5 - Prob. 2CFCh. 6.5 - Diagram the six-step life cycle of animal viruses.Ch. 6.5 - Define the term cytopathic effect and provide one...Ch. 6.5 - Provide examples of persistent and transforming...Ch. 6.5 - Provide a thorough description of lysogenic and...Ch. 6.6 - List the three principal purposes for cultivating...Ch. 6.6 - Describe three ways in which viruses are...Ch. 6.7 - Prob. 18AYPCh. 6.8 - Analyze the relative importance of viruses in...Ch. 6.8 - Prob. 20AYPCh. 6 - Prob. 1CFCh. 6 - A virus is a tiny infectious a. cell. b. living...Ch. 6 - Viruses are known to infect a. plants. b....Ch. 6 - The nucleic acid of a virus is a. DNA only. b. RNA...Ch. 6 - The general steps in a viral multiplication cycle...Ch. 6 - Prob. 5MCQCh. 6 - In general, RNA viruses multiply in the cell ____,...Ch. 6 - Viruses cannot be cultivated in/on a. tissue...Ch. 6 - Clear patches in cell cultures that indicate sites...Ch. 6 - Label the parts of this virus. Identify the...Ch. 6 - Circle the viral infections from this list:...Ch. 6 - In lysogeny, viral DNA is inserted into the host...Ch. 6 - A viral capsid is composed of subunits called...Ch. 6 - The envelope of an animal virus is derived from...Ch. 6 - The nucleic acid of animal viruses enters the cell...Ch. 6 - Viruses that persist in the (host) cell and cause...Ch. 6 - Provide evidence in support of or refuting the...Ch. 6 - Summarize the unique properties of viruses and...Ch. 6 - Prob. 3CTQCh. 6 - Prob. 4CTQCh. 6 - Prob. 5CTQCh. 6 - Prob. 6CTQCh. 6 - Prob. 7CTQCh. 6 - Prob. 8CTQCh. 6 - Prob. 9CTQCh. 6 - Prob. 10CTQCh. 6 - Prob. 1CCCh. 6 - Prob. 2CCCh. 6 - Prob. 3CCCh. 6 - Prob. 4CCCh. 6 - Prob. 1VCCh. 6 - Prob. 1CM
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- RNA-dependent RNA polymerase performs which of the following functions? O 1) Uncoats the viral genome 2) transcribes retroviral RNA genomes into DNA 3) Replicates RNA into RNA O 4) Replicates DNA into RNA 5) Shuttles RNA genomes into the nucleus for assemblyarrow_forwardThe second step in viral replication is entry. For bacteriophage, entry usually involves: O a) direct entry of the nucleic acid into the cell. Ob) phagocytosis. c) membrane fusion mechanism of entry. d) receptor-mediated endocytosis.arrow_forwardA particular animal virus requires the use of DNA polymerase from its host, since it does not possess its own DNA polymerase enzyme. Which of the following assumptions in A-D would likely be correct regarding this virus? A) O This virus could not be a retrovirus type. B) OIt could be a (-) ss RNA virus. C) O It could be a (+) ss RNA virus. D) O The vVirus life cycle very likely includes going to the host cell nucleus. E) O All ofA-D are correct assumptions.arrow_forward
- You are studying RNA viruses and have discovered one that grows well in a culture of eukaryotic cells. You know that the virus is a single-stranded RNA virus, but you don't know if it is positive or negative stranded. Your lab-mate says, "Well, just treat your cell culture with cyclohexamide and see if the virus replicates its genome." You know that cyclohexamide inhibits protein elongation by binding to eukaryotic ribosomes. What is the basis of your lab-mate's suggestion?arrow_forwardWhat is the function of reverse transcriptase in retroviruses? a) It converts viral RNA into double-stranded DNA Ob) It uses viral RNA as a template for making complementary RNA strands Oc) It translates viral RNA into proteins d) It uses viral DNA as a template for RNA synthesisarrow_forwardGiven that COVID19 has a single strand RNA for its genome, the number of rounds required to complete replicating 3 viable virus particles? a) 3 b) 4 c) 5 d) 6 e) 9arrow_forward
- Briefly describe how the Nucleocapsid protein of rabies virus promotes the switch from transcription to viral genomic replication.arrow_forwardDouble-stranded RNA viruses, use the following polymerase for genome synthesis: A) viral RNA-dependent RNA polymerase. B) host cell DNA-dependent RNA polymerase. C) viral DNA-dependent DNA polymerase. D) host cell RNA-dependent RNA polymerase.arrow_forwardIf a viral host cell has a mutation that interferes with the addition of carbohydrates to proteins (glycoproteins) during processing in the Golgi apparatus, which of the following processes is most likely to occur? O A. Viruses released by that host cell would have a decreased ability to infect cells than the virus that originally infected the cell. B. The virus-encoded protease would be unable to cleave large viral proteins into smaller, functional polypeptides. OC. The virus would be unable to replicate within the host cell. D. Viruses released by that cell are novel and would result in infections with higher mortality rates.arrow_forward
- Describe the structure of a bacterial genome, and explain how it differs from a eukaryotic genome. Explain what a plasmid is, and describe the role of plasmids in the spread of antibiotic resistance genes. Explain how bidirectional semiconservative DNA replication copies the circular chromosome of a bacterium during cell division. Explain the steps of replication by DNA polymerase, including initiation, elongation, and termination. Explain the different kinds of mutations and how they occur.arrow_forwardThere have been recent outbreaks of dog flu in the US. Why doesn't this virus infect humans? A) The virus can replicate in cells of all species but can only egress from dog cells. B) The genetic code of the virus is the same as that in dog cells but is different from other organisms. C) The virus can only attach to dog cells. D) The virus can enter cells of all species but can only replicate in dog cells.arrow_forwardList a method a virus can use to prime DNA replication and give an example of a virus that uses this priming method.arrow_forward
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