BIOLOGY VOL. II
16th Edition
ISBN: 9781308795317
Author: Raven
Publisher: Mcgraw-Hill/Create
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Chapter 27, Problem 2S
Most biologists believe that viruses evolved following the origin of the first cells. Defend or critique this concept.
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Chapter 27 Solutions
BIOLOGY VOL. II
Ch. 27 - The reverse transcriptase enzyme is active in...Ch. 27 - Which of the following is NOT part of a virus? a....Ch. 27 - Which of the following is common in animal viruses...Ch. 27 - Which of the following would NOT be part of the...Ch. 27 - A process by which a virus may change a benign...Ch. 27 - Prob. 6UCh. 27 - Prob. 7UCh. 27 - Prob. 1ACh. 27 - The idea of a protein that was an infectious agent...Ch. 27 - Bacterial viruses and animal viruses are similar...
Ch. 27 - Prob. 4ACh. 27 - Phage conversion in which viruses add genes to a...Ch. 27 - According to the prion hypothesis, the infectious...Ch. 27 - Prob. 7ACh. 27 - Prob. 8ACh. 27 - E. coli lysogens derived from infection by phage ...Ch. 27 - Most biologists believe that viruses evolved...Ch. 27 - Prob. 3SCh. 27 - What do we mean by the term emerging virus? How is...Ch. 27 - How might phage be used to transfer E. coli genes...
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- Are viruses alive? Explain your answer by citing proofs that will support your answer to the question.arrow_forwardSome people feel that viruses are living organisms. Give an explanation as to why they cannot be considered living at this time.arrow_forwardYou 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 informationarrow_forward
- What 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_forwardThe discovery of HIV virus was a race between two groups of scientists. Do you think the scientistic research should be a “race”? What are the pros and cons of such a race?arrow_forwardChoose the correct the correct answer Viral particicles contain both nucleic acid and protein and can replicate inside of a host cell. Technically, this constitutes a "self -replicating molecular assemblage" which is also one way to define life. Therefore, one can conclude that a. Viruses are not living because they don't breathe oxygen b.Viruses are living c.Viruses are not living because they cannot think d. Viruses are not living because this formationis a simple repetitive process without the ability to respond to the environmentarrow_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_forwardYou discovered a novel virus causing a new disease. Briefly describe how will you go about characterizing it to prove that it is indeed a novel virus.arrow_forwardPurpose 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 advancements. Please answer this in 3 sentences max. Do not copy and paste the other answer on this site, because it is not helpfularrow_forward
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