Genetics: Analysis and Principles
6th Edition
ISBN: 9781259616020
Author: Robert J. Brooker Professor Dr.
Publisher: McGraw-Hill Education
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Textbook Question
Chapter 18.1, Problem 1COMQ
What is a common feature found in all viruses?
a. An envelope
b. DNA
c.
d. All of the above can be found in any virus.
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Which of the following does NOT inititiate DNA synthesis?
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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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- The viral ________ plays a role in attaching a virion to the host cell. a. core b. capsid C. envelope d. both b and carrow_forwardWhich statement is true? a. A virion contains DNA and RNA. b. Viruses are acellular. c. Viruses replicate outside of the cell. d. Most viruses are easily visualized with a light microscope.arrow_forwardWhat determines the specificity of viruses to their host cells? a. surface or outer proteins b. No correct answer c. capsid d. polymerasearrow_forward
- Viruses are not considered to be alive because: (choose all that apply) Virus Basics Viruses are not considered to be alive because: (choose all that apply) A. They do not grow B. They cannot reproduce on their own C. They are not made of cells D. They do not contain genetic material (such as DNA)arrow_forwardWhy do viruses need to infect a host? A. In order to eat other viruses B. In order to reproduce C. In order to grow from eggs to adult viruses D. In order to properly socialize with other virusesarrow_forwardWhich of the following is a property of life that viruses lack? A. The manufacture and use of complex carbon containing molecules B. The potential to grow and expand their populations C. Engages in self-sustaining biological processes such as homeostasis and metabolism D. The potential to pass hereditary material to offspringarrow_forward
- Why do viruses need to infect a host? A. In order to reproduce B. In order to grow from eggs to adult viruses C. In order to eat other viruses D. In order to properly socialize with other virusesarrow_forwarda. Since viruses lack metabolic enzymes, how can they synthesize necessary components? b. Name some enzymes that viruses may have for invading and completing their cycles.arrow_forwardDiscuss how the components of viruses assemble to make new virus particles. What is the difference between a virus that can self-assemble and one thatcannot? Give examples.arrow_forward
- The envelope of an animal virus is derived from the of its host cell. Select one: A. Cell wall B. Receptors C. Glycocalyx D. Membranearrow_forwardThe envelope of an animal virus is derived from the of itshost cell.a. cell wall b. membrane c. glycocalyx d. receptorsarrow_forwardA virus is isolated, and individual virions appear spherical. What type of virus is this? A. Bacteriophage B. Helical C. Icosahedral D. Lysogenicarrow_forward
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