Which of the following explain why it is important to study viruses? Select all thatapply.| Viruses have metabolic capabilities and are able to carry out transcription andtranslationViruses cause diseases.OViruses can act as agents of natural selection, promoting the evolution oforganismal traits.|Viruses can introduce foreign genes into cellular genomesRemnants of viral genomes were integrated into human genome

viruses are one of the most infectious microbes that are considered nonliving things since they do…

Which of the following explain why it is important to study viruses? Select all that apply. O Viruses have metabolic capabilities and are able to carry out transcription and translation Viruses cause diseases. Viruses can act as agents of natural selection, promoting the evolution of organismal traits. Viruses can introduce foreign genes into cellular genomes Remnants of viral genomes were integrated into human genome

Which of the following explain why it is important to study viruses? Select all that apply. O Viruses have metabolic capabilities and are able to carry out transcription and translation Viruses cause diseases. Viruses can act as agents of natural selection, promoting the evolution of organismal traits. Viruses can introduce foreign genes into cellular genomes Remnants of viral genomes were integrated into human genome

Biology (MindTap Course List)

11th Edition

ISBN:9781337392938

Author:Eldra Solomon, Charles Martin, Diana W. Martin, Linda R. Berg

Publisher:Eldra Solomon, Charles Martin, Diana W. Martin, Linda R. Berg

Chapter24: Viruses And Subviral Agents

Section: Chapter Questions

Problem 10TYU: Arrange the following list into the correct sequence for part of the cycle of a retrovirus: 1. dsDNA...

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Several negative-strand viruses carry their genomeas a set of discrete RNA segments. Examples include influ-enza virus (eight segments), Rift Valley fever virus (threesegments), Hantavirus (three segments), and Lassa virus(two segments), to name a few. Why does segmentation ofthe genome provide a strong evolutionary advantage forthese viruses?
Can viruses adapt by natural selection? A. No, because there isn't a genetic basis for inheritance between parent and offspring virus particles. B. No, because there isn't a way to distinguish more fit from less fit virus particles C. Yes but only via human (domestic/artificial) selection D. No they evolve by mutations. E. Yes, virus particles that are most successful successful in reproducing quickly and infecting other host cells are the best adapted.
Each year, hundreds of millions of people get sick from diseases like Zika, Dengue Fever, and Yellow Fever that are spread by mosquitoes. Some scientists are investigating the possibility of curbing these mosquito-borne diseases by genetically modifying the mosquitoes, such that they become less able to either reproduce or to carry the disease-causing microbes. Should genetically modified mosquitoes be released into the environment to combat these viruses?
In 1918, an influenza pandemic that originated with avian flu killed 50 million people. Researchers isolated samples of that virus from bodies of infected people preserved in Alaskan permafrost since 1918. From the samples, they sequenced the viral genome, then reconstructed the virus. The reconstructed virus is 39,000 times more infectious than modern influenza strains, and 100 percent lethal in mice. Understanding how this virus works can help us defend ourselves against other deadly influenza strains that arise. For example, discovering what makes it so infectious would help researchers design more effective vaccines. Critics of the research are concerned: If the virus escapes the containment facilities (even though it has not done so yet), it might cause another pandemic. Worse, terrorists could use the published DNA sequence and methods to make the virus for horrific purposes. Do you think this research makes us more or less safe?
Which 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. Rhinovirus
You are a virologist studying a newly isolated viral strain and have sequenced its genome. You find that the genome contains 25% A, 55% G, 20% C, and 10% U. Which of the following conclusions is likely correct? This is a single-stranded RNA virus This is a single-stranded DNA virus This is a double-stranded RNA virus This is a double-stranded DNA virus No conclusions can be drawn from this information
Why is it a strong evolutionary hypothesis that although viruses are the structurally simplest beings they were not the first living beings?
Why do scientists worry more about new strains of viruses like influenza and coronviruses as potential causes of deadly human pandemics, but they never talk about the next big Herpesvirus strain deadly pandemic? Which of the statements below helps partially answer that? Influenza and CoV are RNA viruses which results in having higher mutation rates -- they can more easily jump between host species. Herpesviruses are dsDNA viruses and usually very host specific. Only humans get Herpesviruses, while animals can get Influenza viruses and Coronaviruses. dsDNA viruses aren't very transmissible and even when they are, they're not deadly. We already have effective vaccines for Herpes. Influenza and CoV have more genes, more complex gene expression, and can undergo genetic recombination or reassortment, while Herpesviruses are more limited.
Describe the lysogenic cycle of a virus. What is the difference between the lytic and lysogenic cycle of a virus? What are vaccines? Define the words “Emerging Virus” and “Pandemic”. Give examples of human diseases caused by viruses. What is a prion and viron? Are prion and virons viruses? Give examples of human or animal diseases caused by prions and what organisms are affected. Book: Biology (Campbell) 11 edition Urry. Cain. Wasserman. Minorsky. Reece
A virus that has which type of genome must carry replicase within the viral particle? (choose all that apply) ds DNA ss (+) DNA ss (–) DNA ss (+) RNA ss (–) RNA Which viral type has a genome that can be directly translated? (choose all that apply) ds DNA ss (+) DNA ss (–) DNA ss (+) RNA ss (–) RNA
. EVOLUTION CONNECTION The success of some viruses lies intheir ability to evolve rapidly within the host. Such viruses evadethe host’s defenses by mutating and producing many alteredprogeny viruses before the body can mount an attack. Thus, theviruses present late in infection differ from those that initiallyinfected the body. Discuss this as an example of evolution inmicrocosm. Which viral lineages tend to predominate?
The Simian Immunodeficiency Virus (SIV), is an HIV-like virus that originally attacks the immune system of monkeys and apes. In 1999, researchers identified a strain of chimpanzee SIV called SIVcpz, which was nearly identical to HIV. Which of the following conclusions could be drawn from the similarities and relatedness that exist between humans and primates based on respective strains of viruses? Mosquitos are vectors of the Simian Immunodeficiency Virus (SIV), and HIV. Once injected with their proboscis and introduced viruses into the human bloodstream, viral mutations occur. Human immunodeficiency virus has reverse transcriptase so it is easier for them to transform into another strain of the virus. The introduction of new viral strains is inevitable and they do not possess selectivity. Both immune host cells from humans and chimpanzees are susceptible to any viral infection. Humans and Chimpanzees were similar so it is easier for the Simian Immunodeficiency…