Biology Concepts and Connections Custom Edition for Everett College
2nd Edition
ISBN: 9781269968904
Author: Campbell
Publisher: PEARSON C
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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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What aspect of an RNA virus makes it more likely than a DNA virus to become an emerging virus?
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Chapter 19 Solutions
Biology Concepts and Connections Custom Edition for Everett College
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 - Prob. 2CCCh. 19.2 - Why is HIV called a retrovirus?Ch. 19.2 - Prob. 4CCCh. 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 - Prob. 6TYUCh. 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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- 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_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_forwardGenerally, the DNA viruses have larger genomes than the RNA viruses. How would size be a factor in the manner in which they use the resources of their host cells?arrow_forward
- Viruses cannot reproduce on their own, without the help of a living cell. Explain the basics of how viruses make more viruses.arrow_forwardWhy do some viruses infect only animals and others only humans? How do viruses overcome these limitations?arrow_forwardExplain how viruses are constructed. How do they work? Can we fine virus fossils? ( How do we know their history?) What are the theories about how viruses came to be?arrow_forward
- Viruses and viroids differ in structure and the diseases they cause. How?arrow_forwardThere are three hypotheses about the origin of viruses. Briefly describe each hypothesis.arrow_forwardWhich group of viruses have genetic material that can be directly transcribed and translated following uncoating in a host cell? -ve sense RNA viruses Retroviruses DNA viruses +ve sense RNA virusesarrow_forward
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