Campbell Biology (11th Edition)
11th Edition
ISBN: 9780134093413
Author: Lisa A. Urry, Michael L. Cain, Steven A. Wasserman, Peter V. Minorsky, Jane B. Reece
Publisher: PEARSON
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Chapter 19, Problem 19.3CR
Summary Introduction
To review: The possibilities that make an RNA virus to become an emerging virus better than a DNA virus.
Concept introduction: Virus are small and acellular organisms that multiply only in a living host. Their genome is made of either DNA or RNA. A DNA virus has deoxyribonucleic acid (DNA) that may be single stranded or double stranded, for example poxvirus. The genome of the RNA virus is made of ribonucleic acid (RNA) that may be single or double stranded, for example, influenza virus.
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Chapter 19 Solutions
Campbell Biology (11th Edition)
Ch. 19.1 - Prob. 1CCCh. 19.1 - MAKE CONNECTIONS Bacteriophages were used to...Ch. 19.2 - Compare the effect on the host cell of a lytic...Ch. 19.2 - MAKE CONNECTIONS Compare the CRISPR-Cas system to...Ch. 19.2 - Prob. 3CCCh. 19.2 - Why is HIV called a retrovirus?Ch. 19.2 - Prob. 5CCCh. 19.3 - Describe two ways in which a preexisting virus can...Ch. 19.3 - Contrast horizontal and vertical transmission of...Ch. 19.3 - WHAT IF? TMV has been isolated from virtually all...
Ch. 19 - Are viruses generally considered living or...Ch. 19 - Prob. 19.2CRCh. 19 - Prob. 19.3CRCh. 19 - Which of the following characteristics,...Ch. 19 - Emerging viruses arise by (A) mutation of existing...Ch. 19 - Prob. 3TYUCh. 19 - Prob. 4TYUCh. 19 - Prob. 5TYUCh. 19 - DRAW IT Redraw Figure 19.8 to show the replicative...Ch. 19 - EVOLUTION CONNECTION The successof some viruses...Ch. 19 - SCIENTIFIC INQUIRY When bacteria infect an animal,...Ch. 19 - WRITE ABOUT A THEME: ORGANIZATION While viruses...Ch. 19 - Prob. 10TYU
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- The genome of which of the following types of animal virus can act directly as MRNA and be utilized by ribosomes without prior processing? O 1) retroviruses O 2) SSDNA viruses 3) -SSRNA viruses O 4) +SSRNA viruses 5) dsDNA virusesarrow_forwardViruses are not considered living entities, despite the fact that they evolve, have genetic information, and are connected to living organisms. What characteristics of living organisms do viruses lack? Give a brief explanation of how viruses lack these aspects.arrow_forwardThe innermost portion of a viruses structure is made up of?arrow_forward
- Why is it a strong evolutionary hypothesis that although viruses are the structurally simplest beings they were not the first living beings?arrow_forwardBecause viruses lack some of the traits seen in all living things, many scientists do not believe viruses to be genuinely "alive." Using a few characteristics of live organisms as examples, explain why viruses may not be truly "alive."arrow_forwardAre DNA viruses or RNA viruses more likely to mutate and evolve?arrow_forward
- If you were to argue that viruses are living organisms, what features of viral structure and function might you use in your argument?arrow_forwardHow do emerging viruses arise? by the spread of existing viruses to new host species by mutation of existing viruses by the spread of existing viruses more widely within their host species all of the abovearrow_forwardwhat is the difference between the DNA virus and RNA virusarrow_forward
- RNA viruses mutate and evolve faster than other viruses.why?arrow_forwardWhy do some viruses infect only animals and others only humans? How do viruses overcome these limitations?arrow_forwardWhich of the following highly contagious viruses is a single-stranded ribonucleic acid (RNA) virus with a helical capsid and envelope and is transmitted by coming in contact with respiratory secretions? "This is a highly contagious respiratory illness transmitted when an infected person coughs or sneezes virus particles into the air," the health department said in a written statement. "It's so contagious that if one person is sick and spreading measles, nine out of 10 people around them who aren't immune will get it, too." Group of answer choices a. Measles b. Parvovirus c. Coxsackie virus A d. Rhinovirusarrow_forward
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