Study Guide for Campbell Biology
11th Edition
ISBN: 9780134443775
Author: Lisa A. Urry, Michael L. Cain, Steven A. Wasserman, Peter V. Minorsky, Jane B. Reece, Martha R. Taylor, Michael A. Pollock
Publisher: PEARSON
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Chapter 19, Problem 2SYK
Summary Introduction
To complete: The given concept map to help organize the understanding of viruses.
Introduction: Virus is an infectious agent that cannot be seen through the naked eyes. Virology is the study of viruses and virologists are the biologists who study viruses.
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Select all the following statements that are TRUE regarding viruses:
□ All viruses are potentially dangerous to humans because any virus can infect any host.
□ Viruses are fastidious pathogens that require complex growth media.
□ Viruses are noncellular particles that take over the metabolism of a cell to generate more virus particles.
□ Viruses are genomes made of RNA and DNA that lack many protein.
□ Viruses can infect all other known life forms on earth, from Archaea to humans.
produce a diagram of the replication of a viral genome of stranded RNA simple [+] and mRNA production via Reverse Transcriptase.
Produce a diagram of the replication and early maturation of a virus wrapped
Produce a diagram of the replication and early maturation of a virus naked. Produce a diagram of the release of an enveloped virus by budding.
Select all the correct statement(s) about viruses:
Viruses exist in one phase both extracellularly and intracellularly
Some viruses are non-obligate parasites
Any viral genome can be directly translated by the host cell's translation machinery
Viruses can be classified based on their nucleic acid and shape
Chapter 19 Solutions
Study Guide for Campbell Biology
Ch. 19 - In the following diagram of lytic and lysogenic...Ch. 19 - Summarize the flow of genetic information during...Ch. 19 - How does a virus spread throughout a plant? Are...Ch. 19 - Create a concept map that describes the lytic and...Ch. 19 - Prob. 2SYKCh. 19 - Prob. 1TYKCh. 19 - Prob. 2TYKCh. 19 - Prob. 3TYKCh. 19 - Prob. 4TYKCh. 19 - T2 and T4 are two types of bacteriophage that...
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- Figure 17.5 Which of the following statements about virus structure is true? a. All viruses are encased in a viral membrane. b. The capsomere is made up of small protein subunits called capsids. c. DNA is the genetic material in all viruses. d. Glycoproteins help the virus attach to the host cell.arrow_forward#7arrow_forwardIf you were to argue that viruses are living organisms, what features of viral structure and function might you use in your argument?arrow_forward
- Consider the separate stages of an animal virus life cycle. Assemble a short list of structures and processes that are unique to the virus and would make good drug targets for an antiviral agent. Explain your rationale for each choice.arrow_forwardDescribe the four morphological classes of viruses, then diagram and give example of each.arrow_forwardAll of the following statements correctly describes the properties of Influenza A virus EXCEPT A-Viral transcription occurs in the nucleus B-Mature virion are released by budding C-Single stranded positive sense RNA virus D-Attaches to cell-surface sialic acidarrow_forward
- Are viruses living or non-living organisms? Explain your answer choice.also Discuss the difficulty in controlling infectious viruses with an example.arrow_forwardDiscuss the following statement: “Viruses exist in the twilight zone of life: outside cells they are simply dead assemblies of molecules; inside cells, however, they are alive.”arrow_forwardDiscuss how the components of viruses assemble to make new virus particles. What is the difference between a virus that can self-assemble and one thatcannot? Give examples.arrow_forward
- The classification of viruses are similar to the classification of organisms in the three domains of life. Discuss this statement critically.arrow_forwardExplain why there is such a controversy about whether viruses are living or non-living. Briefly explain your answer by considering both sides of the argument. Your answerarrow_forwardwhat are the chemical composition of a virus and structures that make up a naked and an enveloped viron. Discuss the basic shapes of virions and include: symmetrical, asymmetrical and tailed. How do viroids and prions differ from virions? Include in your answer the major diseases associated with prions and viroids and their economic impact to our food supply.arrow_forward
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