Brock Biology of Microorganisms (14th Edition)
14th Edition
ISBN: 9780321897398
Author: Michael T. Madigan, John M. Martinko, Kelly S. Bender, Daniel H. Buckley, David A. Stahl, Thomas Brock
Publisher: PEARSON
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Chapter 9.2, Problem 2MQ
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Chapter 9 Solutions
Brock Biology of Microorganisms (14th Edition)
Ch. 9.1 - Distinguish between a positive-strand RNA virus...Ch. 9.1 - Prob. 2MQCh. 9.1 - Prob. 3MQCh. 9.2 - Prob. 1MQCh. 9.2 - Prob. 2MQCh. 9.2 - Prob. 3MQCh. 9.3 - Prob. 1MQCh. 9.3 - In the X174 genome, describe the difference...Ch. 9.3 - Prob. 3MQCh. 9.4 - In what major way does transcription of phage DNA...
Ch. 9.4 - Prob. 2MQCh. 9.5 - What type of genome is seen in most archaeal...Ch. 9.5 - Compared with other archaeal viruses, what are two...Ch. 9.6 - Prob. 1MQCh. 9.6 - Prob. 2MQCh. 9.6 - Prob. 3MQCh. 9.7 - Prob. 1MQCh. 9.7 - Prob. 2MQCh. 9.7 - Prob. 3MQCh. 9.8 - Prob. 1MQCh. 9.8 - Prob. 2MQCh. 9.8 - How are protein synthesis and genomic replication...Ch. 9.9 - Prob. 1MQCh. 9.9 - Prob. 2MQCh. 9.9 - Prob. 3MQCh. 9.10 - Prob. 1MQCh. 9.10 - Prob. 2MQCh. 9.10 - Prob. 3MQCh. 9.11 - Prob. 1MQCh. 9.11 - Prob. 2MQCh. 9.11 - How does the role of reverse transcriptase in the...Ch. 9.12 - If viroids are circular molecules, why are they...Ch. 9.12 - Prob. 2MQCh. 9.13 - Prob. 1MQCh. 9.13 - Prob. 2MQCh. 9.13 - Prob. 3MQCh. 9 - Prob. 1RQCh. 9 - Describe the classes of viruses based on their...Ch. 9 - REVIEW QUESTIONS
3. How might viruses help...Ch. 9 - Prob. 4RQCh. 9 - Describe how the genome of bacteriophage X174 is...Ch. 9 - Why can it be said that transcription of the...Ch. 9 - Prob. 7RQCh. 9 - Prob. 8RQCh. 9 - Prob. 9RQCh. 9 - Prob. 10RQCh. 9 - Prob. 11RQCh. 9 - Prob. 12RQCh. 9 - Prob. 13RQCh. 9 - Prob. 14RQCh. 9 - Rabies virus and poliovirus both have...Ch. 9 - Prob. 16RQCh. 9 - Why do both hepadnaviruses and retroviruses...Ch. 9 - Prob. 18RQCh. 9 - What are the similarities and differences between...Ch. 9 - Prob. 20RQCh. 9 - Not all proteins are made from the RNA genome of...Ch. 9 - Replication of both strands of DNA in adenoviruses...Ch. 9 - Imagine that you are a researcher at a...Ch. 9 - Prob. 4AQ
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- The relative amounts of each nitrogenous base are tabulated here for four different viruses. For each virus listed in the following table, indicate whether its genetic material is DNA or RNA and whether it is single stranded or double stranded. Explain your reasoning. Virus T C U G A I 0 12 9 12 9 II 23 16 0 16 23 III 34 42 0 18 39 IV 0 24 35 27 17arrow_forwardSelect all the following statements that are TRUE regarding viruses: □ All viruses are potentially dangerous to humans because any virus can infect any host. □ Viruses are fastidious pathogens that require complex growth media. □ Viruses are noncellular particles that take over the metabolism of a cell to generate more virus particles. □ Viruses are genomes made of RNA and DNA that lack many protein. □ Viruses can infect all other known life forms on earth, from Archaea to humans.arrow_forwardDiscuss the origin and importance of viruses.arrow_forward
- As a general rule, viruses are not considered to be alive based on several reasons. One such reason is that some viruses use RNA as their genetic material instead of DNA. Which of the five biological themes does this violate? Briefly explain why.arrow_forwardCompare and contrast the composition of a viral genome to that of a cellular organism’s genome.arrow_forwardSome people feel that viruses are living organisms. Give an explanation as to why they cannot be considered living at this time.arrow_forward
- Comment on the possible origin of viruses. Is it not curious that the human cell welcomes a virus and hospitably removes its coat as if it were an old acquaintance?arrow_forwardUpon learning the distinguishing characteristics of living organisms, would you consider viruses to be exhibiting the features of living organisms? Why or why not? Explain what other principles support the characteristics of life.arrow_forwardDo you consider viruses to be alive? Take a position on the issue and perform research to find evidence in support of your argument. Share and discuss this evidence with your peers to come to a final consensus on whether viruses should be considered living organisms.arrow_forward
- Researchers have recently discovered giant viruses that are 1 μm in length, the same size as some bacterial cells. The genomes of these viruses contain over 2 million base pairs of DNA, which is more DNA than is found in many bacterial genomes, and their genomes contain hundreds—in some cases, thousands—of genes. Given these observations and what you know about viruses, should viruses be considered living or nonliving? Give arguments for and against considering viruses as living organisms.arrow_forwardMany viruses have the ability to resurrect dead cells. Why investigating this feature of viruses may be relevant to youarrow_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
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