Genetics: Analysis and Principles
6th Edition
ISBN: 9781259616020
Author: Robert J. Brooker Professor Dr.
Publisher: McGraw-Hill Education
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Chapter 18, Problem 6CONQ
Summary Introduction
To review:
The specificity of the attachment step during a reproductive cycle of a virus for one or few cell types.
Introduction:
A non-living entity that is not capable of its own reproduction is a virus. It is too small in size to be seen by the normal microscope, although it can be viewed under electronic microscope. It depends on the cellular machinery of the host it infects for its reproduction.
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Describe the process of viral reproduction.
Describe two mechanisms a virus might use to prevent the induction of apoptosis in an infected cell.
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Chapter 18 Solutions
Genetics: Analysis and Principles
Ch. 18.1 - 1. What is a common feature found in all viruses?...Ch. 18.1 - 2. Viral genomes can be
a. DNA or RNA.
b....Ch. 18.2 - Prob. 1COMQCh. 18.2 - Prob. 2COMQCh. 18.3 - A mutation in phage results in 10-fold greater...Ch. 18.3 - 2. The cl gene that encodes the λ repressor has...Ch. 18.4 - A viral protein that is needed to make HIV DNA is...Ch. 18.4 - Prob. 2COMQCh. 18.4 - After HIV components are made, what is the correct...Ch. 18 - 1. Discuss why viruses are considered nonliving.
Ch. 18 - What structural features are common to all...Ch. 18 - 3. What are the similarities and differences among...Ch. 18 - Prob. 4CONQCh. 18 - Prob. 5CONQCh. 18 - Prob. 6CONQCh. 18 - Prob. 7CONQCh. 18 - Prob. 8CONQCh. 18 - Prob. 9CONQCh. 18 - Prob. 10CONQCh. 18 - 11. What is a prophage, a provirus, and an...Ch. 18 - Prob. 12CONQCh. 18 - Prob. 13CONQCh. 18 - 14. With regard to promoting the lytic or...Ch. 18 - 15. How do therepressor and the cro protein affect...Ch. 18 - Prob. 16CONQCh. 18 - Figure 18.11 shows a genetic switch that controls...Ch. 18 - Prob. 18CONQCh. 18 - Prob. 19CONQCh. 18 - Explain the role of RNase H (a component of...Ch. 18 - Prob. 21CONQCh. 18 - Prob. 22CONQCh. 18 - Prob. 23CONQCh. 18 - 24. Compare and contrast the roles of fully...Ch. 18 - 25. Describe the role of the Gag polyprotein...Ch. 18 - Prob. 26CONQCh. 18 - Prob. 27CONQCh. 18 - 1. Discuss how researchers determined that TMV is...Ch. 18 - Prob. 2EQCh. 18 - What is a reconstituted virus?Ch. 18 - Following the infection of healthy tobacco leaves...Ch. 18 - Prob. 5EQCh. 18 - Prob. 6EQCh. 18 - A researcher identified a mutation in PR of phage ...Ch. 18 - Experimentally, when an E. coli bacterium already...Ch. 18 - 9. A bacterium is exposed to a drug that inhibits...Ch. 18 - This question combines your knowledge of bacterial...Ch. 18 - Prob. 1QSDCCh. 18 - 2. Certain environmental conditions such as...Ch. 18 - 3. Browse the Internet to determine the drugs that...
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- Arrange the following list into the correct sequence for viral reproduction: 1. penetration 2. assembly 3. replication 4. attachment 5. release (a) 1, 2, 3, 4, 5 (b) 5, 2, 3, 4, 1 (c) 4, 1, 3, 2, 5 (d) 4, 1, 2, 3, 5 (e) 3, 1, 2, 4, 5arrow_forwardIdentify the numbered steps of this viral life cycle/replication cycle depicted here.arrow_forwarda. Which type of viruses can be directly used for translation? a) dsRNA b) Positive ssRNA c) Retroviruses d) Negative ssRNA b. An antiviral drug specifically modifies viral receptors on a eukaryotic host cell. How might this affect the viral reproductive cycle? It would enhance the process of viral apoptosis It would result in the degeneration of the viral capsid It would facilitate the process of viral endocytosis It would prevent the virus from attaching to the host cellarrow_forward
- Which is the usual order of a viral replication cycle when it is making new virions? O Host recognition > replication > entry > uncoating > release O Uncoating > host recognition > replication > entry > release O Prophase > metaphase > anaphase > telophase > cytokinesis Host recognition > entry > uncoating > replication > release MacBook Air DII DD F11 888 F8 F9 F7 F6 F5 F3 F4 & %24 % 7 8 LOarrow_forwardThe second step in viral replication is entry. For bacteriophage, entry usually involves: O a) direct entry of the nucleic acid into the cell. Ob) phagocytosis. c) membrane fusion mechanism of entry. d) receptor-mediated endocytosis.arrow_forwardDuring the lysogenic cycle of lambda (1) phage the phage genome is integrated in the host chromosome where it is passed on to daughter cells through binary fission. the phage DNA is copied and accumulates in the cytoplasm. Then a trigger causes capsid proteins to be made and phages are assembled. the product of one prophage gene is made and it activates most of the other prophage genes. the viral genes immediately turn the host cell into a lambda-producing factory. Then the host lyses. 0000arrow_forward
- When a virus infects eukaryotic cells, one fate of the cell is lysis. List and briefly describe two other potential fates.arrow_forwardMatch each stage of the viral replication cycle with the one definition that best describes it. ¡¡¡ The stage at which nascent virions leave the cell The virus adheres to the surface of the cell The viral nucleic acid is released into the cell The stage at which virions become infectious The construction of new virions composed of viral proteins and the replicated genome The stage at which the viral genome is copied The virus passes into the cell from the extracellular environment 1. Attachment 2. Replication 3. Maturation 4. Release 5. Penetration 6. Uncoating 7. Assemblyarrow_forwardPlease explain briefly the steps involved in the viral multiplication cycle. How is each step important? Please explain the difference between virus and bacteriophage multiplication.arrow_forward
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