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 24.5, Problem 1C
Summary Introduction
To describe: The way in which viruses would have evolved before their host.
Introduction: A virus can be defined as an infectious agent that is capable to replicate its genetic material inside the host cell. A virus consists of a DNA or RNA as genetic material, capsid protecting the genetic material, and a lipid envelope that surrounds the protein coat.
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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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- Arrange the following list into the correct sequence for part of the cycle of a retrovirus: 1. dsDNA integrated into host DNA 2.viral proteins synthesized on host ribosomes 3. viral DNA uses host enzymes to transcribe viral RNA 4. reverse transcriptase catalyzes synthesis of ssDNA 5. synthesis of second DNA strand (a) 5, 2, 1, 3, 4 (b) 5, 2, 3, 4, 1 (c) 4, 5, 1, 3, 2 (d) 4, 1, 2, 3, 5 (e) 2, 1, 3, 4, 5arrow_forwardViruses are said to be “obligate intracellular parasites.” What does this mean with respect to how new viruses are made?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
- Are viruses alive? Explain your answer by citing proofs that will support your answer to the question.arrow_forwardViruses are not found in the tree of life. Why do you think so?arrow_forwardHow is a provirus related to disease symptoms? A-the provirus continually lyses cells, causing disease symptoms B-the provirus periodically shifts to a lytic cycle, causing disease symptoms C-the provirus can produce endospores during unfavorable times D-the provirus secretes powerful toxins that make the host illarrow_forward
- Because viruses lack some of the traits seen in all living things, many scientists do not believe viruses to be genuinely "alive." Using a few characteristics of live organisms as examples, explain why viruses may not be truly "alive."arrow_forwardSome people feel that viruses are living organisms. Give an explanation as to why they cannot be considered living at this time.arrow_forwardIs a Virus considered living or non-living? Justify your answer and Give one example of a virus.arrow_forward
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