Study Guide for Campbell Biology
11th Edition
ISBN: 9780134443775
Author: Lisa A. Urry, Michael L. Cain, Steven A. Wasserman, Peter V. Minorsky, Jane B. Reece, Martha R. Taylor, Michael A. Pollock
Publisher: PEARSON
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Textbook Question
Chapter 19, Problem 11TYK
An RNA viral genome may be replicated by
- a. DNA polymerase from the host.
- b. RNA polymerase coded by viral genes and carried in the viral capsid.
- c. reverse transcriptase that synthesizes RNA.
- d. RNA polymerase from the host.
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Students have asked these similar questions
Which of the following would be the first step in biosynthesis of a virus with a - (minus) strand of RNA?
A. Synthesis of double stranded RNA from a DNA template
B. Transcription of mRNA from DNA
C. Synthesis of DNA from an RNA template
D. Synthesis of double stranded RNA from an RNA template
E. Synthesis of DNA from a DNA template
If the HIV did not have a reverse transcriptase enzyme, then which of the following would apply?
Select one:
a. The virus can make use of the reverse transcriptase enzyme from the host cell to convert its RNA into
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b. Viral particles will be produced without reverse transcriptase enzyme since the original HIV is an
RNA virus and needs to assemble RNA ant coat proteins together
c. The virus will manufacture its proteins from its RNA using translation and ribosomes from host cell
d. Provirus will not be formed and assembly of viral particles will never occur
e. The virus will not be able to recognise the host cell and therefore entry into the cell is blocked
The HIV virus produces copies of its genome through:
A.
DNA replication
B.
Reverse transcription followed by integration then normal transcription
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RNA replication from an RNA template
D.
differential splicing
Chapter 19 Solutions
Study Guide for Campbell Biology
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Need a deep-dive on the concept behind this application? Look no further. Learn more about this topic, biology and related others by exploring similar questions and additional content below.Similar questions
- How does a retrovirus prepare its genetic material for incorporation into the host cell genome? a. Host enzymes incorporate viral RNA directly into the genome. b. Host enzymes covert viral RNA to double-stranded viral DNA. c. Viral reverse transcriptase uses viral RNA to make double-stranded viral RNA. d. Viral reverse transcriptase uses viral RNA to make double-stranded viral DNA. e. Viral reverse transcriptase uses viral single-stranded DNA to make double-stranded viral DNA.arrow_forwardAfter attachment and entry, the next step of viral lifecycle is to A.translate viral proteins B. assembly new viral particles C. replicate the genome D. release new virionsarrow_forwardWhy are vaccines and/or passive immunization the method of choice in the treatment or prevention of viral infections? A. There are no known inhibitors to reverse transcription B. Viruses are non-living and do not have their own genetic mechanisms to reproduce by themselves hence host cells must rely on targeting the virus or their products. C. Antibodies prevent replication of viral genome D. Antibodies prevent transcription and translation of viral genomes E. All of thesearrow_forward
- A positive-strand RNA virus: a.must first be converted to a mRNA before viralproteins can be translated b.is not recognized by host ribosomes. c.can directly translate viral proteins. d.will be degraded by host enzymes. e.needs RNA dependent RNA polymerase to get converted into mRNAarrow_forwardCapsid proteins are synthesized during which phase of viral replication? a. replication d. proteination c. assembly b. biosynthesis e. All of these are correct.arrow_forwardTo infect their specific host cells, viruses go through these chronological steps EXCEPT a. Release of progeny viruses b. Absorption and penetration of the viral particles c. Uncoating of the nucleic acid of the viral particles d. Synthesis and assembly of viral particle componentsarrow_forward
- A virus is isolated, and individual virions appear spherical. What type of virus is this? A. Bacteriophage B. Helical C. Icosahedral D. Lysogenicarrow_forwardDuring viral infection, attachment is usually specific to a particular celltype becausea. the virus is attracted to the appropriate host cells by proteinssecreted into the extracellular fluid.b. the virus recognizes and binds to specific molecules in thecytoplasm of the host cell.c. the virus recognizes and binds to specific molecules on the surfaceof the host cell.d. the host cell produces channel proteins that provide passageways forviruses to enter the cytoplasm.e. the virus releases specific proteins that make holes in the membranelarge enough for the virus to enter.arrow_forwardInfluenza viruses use to replicate its genome whereas retroviruses use before they can integrate their genome into the host DNA. A. reverse transcriptase; RNA dependent RNA polymerase B. RNA dependent RNA polymerase; reverse transcriptase C. replicase; DNA polymerase D. DNA polymerase, replicasearrow_forward
- Which of the following enzymes helps the +sense RNA virus Poliovirus to make multiple copies of its genome? A. RNA dependent RNA polymerase B. RNA dependent DNA polymerase C. Reverse transcriptase D. DNA Polymerase I E. DNA dependent RNA polymerasearrow_forwardwhat event occurs in bacteriophage multiplication that does not occur in animal virus replication?A,B,C,D, or E? a. adsorption to the host cells. b. injection of the viral nucleic acid into the host cell. c. host cell synthesis of viral enzymes and capsid proteins. d. assembly of nucleocapsids. e. replication of viral nucleic acid.arrow_forward(i) Describe each way viruses may be classified. And Define each of the following parts of a virus, their composition/structure, and explain their role in the viral life cycle: a. Capsid b. Capsomere c. Nucleocapsid d. Envelope e. Spikes (typed format not handwritten) thanksarrow_forward
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