Biology (MindTap Course List)
11th Edition
ISBN: 9781337392938
Author: Eldra Solomon, Charles Martin, Diana W. Martin, Linda R. Berg
Publisher: Cengage Learning
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Chapter 24, Problem 15TYU
Summary Introduction
To argue: In favor and in against of one of the hypotheses of the origin of viruses.
Introduction: Viruses are a microscopic infectious agent. These organisms are dependent on the host cells for replication. Viruses can infect both plants and animals and cause diseases. There are three hypotheses developed regarding the origin of viruses. These include the progressive hypothesis, regressive and virus-first hypothesis.
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Chapter 24 Solutions
Biology (MindTap Course List)
Ch. 24.1 - Contrast a virus with a cellular organism.Ch. 24.1 - Prob. 2LOCh. 24.1 - Prob. 1CCh. 24.1 - What are the structural components of a virus?Ch. 24.2 - Prob. 3LOCh. 24.2 - Prob. 1CCh. 24.3 - Prob. 4LOCh. 24.3 - Prob. 5LOCh. 24.3 - Prob. 1CCh. 24.3 - Prob. 2C
Ch. 24.4 - Prob. 6LOCh. 24.4 - Prob. 7LOCh. 24.4 - Prob. 1CCh. 24.4 - Prob. 2CCh. 24.4 - Prob. 3CCh. 24.5 - Trace the evolutionary origin of viruses according...Ch. 24.5 - Prob. 1CCh. 24.5 - Prob. 2CCh. 24.6 - Compare satellites, viroids, prions, and defective...Ch. 24.6 - Prob. 1CCh. 24 - The genome of a virus consists of (a) DNA (b) RNA...Ch. 24 - Prob. 2TYUCh. 24 - Prob. 3TYUCh. 24 - Test Your Understanding Know and Comprehend 4. In...Ch. 24 - Prob. 5TYUCh. 24 - Prob. 6TYUCh. 24 - Prob. 7TYUCh. 24 - Prob. 8TYUCh. 24 - Arrange the following list into the correct...Ch. 24 - Arrange the following list into the correct...Ch. 24 - VISUALIZE What does this diagram illustrate?...Ch. 24 - Prob. 12TYUCh. 24 - Prob. 13TYUCh. 24 - Prob. 14TYUCh. 24 - Prob. 15TYUCh. 24 - Prob. 16TYU
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- Trace the evolutionary origin of viruses according to current hypotheses and describe research regarding the evolution of polydnaviruses.arrow_forwardAccording to the progressive, or escape, hypothesis, viruses (a) appeared before the three domains diverged (b) came from mobile genetic elements and had multiple origins (c) evolved from early plant cells (d) are bits of nucleic acid that escaped from animal cells (e) evolved from cells thatwere parasites in larger cellsarrow_forwardPropose an explanation for why during the history of the discovery of viruses they were first called filterable agents, then they were thought to be chemicals and finally, why were they able to finally be identified and given a name. – think about this as it relates to technological advancementsarrow_forward
- What is the origin (or origins) of viruses? Is there evidence that viruses have multiple origins? Show us the evidence.arrow_forwardEvaluate how each of the following results of scientific studies regarding mutations of the SARS-COV2 viral genome may implicate how humans can live with the virus for generations to come. Results Implication Scientific analysis of SARS-COV2 viral genomes from different countries has revealed that the virus accumulates about 2 new mutations per month. Many of these mutations have occurred due to their many battles with the immune systems of their human hosts. The vast majority of mutations have little or no effect on how the virus behaves, but scientists are keeping a watchful eye on mutations of the critical region of the viral genome: the gene encoding the spike protein. Mutations that give the virus an evolutionary advantage should be more likely to turn up repeatedly in the virus’ family tree.arrow_forwardBased on devolution or the regressive hypothesis, it proposes to explain the origin of viruses by suggesting that they evolved from free-living cells. a. True b. Falsearrow_forward
- According to your own understanding, what do you think makes viruses some of the most common disease causing organisms? Explain comprehensivelyarrow_forward. According to origin-of-life scenarios proposed by William Martin, Michael Russell, and Theodor Diener, the first self-replicating genetic molecules were most similar to: double-stranded RNA viruses single-stranded RNA virusoids single-stranded DNA viruses double-stranded DNA viruses single-stranded RNA viroidsarrow_forwardWhat are two things that are true about all known viruses? Hint: one relates to the virus itself, the other relates to the ability of the virus to reproduce (replicate).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_forwardViruses consist of either DNA or RNA wrapped inside a protein coat. Are viruses considered alive? A. Yes, because they contain DNA. B. Yes, because they contain DNA and proteins. C. No, because they lack carbohydrates and lipids. D. No, because some viruses use RNA as the main genetic molecule.arrow_forwardFigure 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
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