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 18.4, Problem 1COMQ
A viral protein that is needed to make HIV DNA is
a. integrase.
b. reverse transcriptase.
c. Vpr.
d. Gag polyprotein.
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Check out a sample textbook solutionStudents have asked these similar questions
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
DNA
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
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
Why 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 these
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 HIV virus produces copies of its genome through: A. DNA replication B. Reverse transcription followed by integration then normal transcription C. RNA replication from an RNA template D. differential splicingarrow_forwardIn an HIV infection, this enzyme is responsible for copying theRNA information in the virus into DNA.a. integraseb. reverse transcriptasec. DNA polymerased. proteasearrow_forwardWhich of the following does NOT inititiate DNA synthesis? a. a single-stranded DNA virus. b. a (-) single stranded RNA virus c. a (+) single stranded RNA virus d. a double-stranded DNA virus (Poxviridae) e. Both (-) and (+) single-stranded RNA virusesarrow_forward
- An experimental drug therapy to treat patients with antibiotic-resistant bacteria involves introduction of a highly specific bacteriophage to the infected patient's bloodstream. Which of the following bacteriophage types would be the LEAST useful for this therapy? a. a lytic bacteriophage b. An enveloped virus c. An RNA virus d. a lysogenic bacteriophagearrow_forwardPeople with the CCR5Δ32 mutation of a T-cell surface protein can be exposed to some strains of HIV-1 without becoming sick. What step of the virus life cycle is likely to be inhibited with this mutation? a. Release b. Reverse transcription c. Uncoating d. Attachmentarrow_forwardYou would like to create an anti-viral medication that is active against both H5N2 and H5N1 strains of influenza. The best drug target would be: a. ribosomal protein production b. Hemagglutinin-mediated fusion c. Neuroaminidase-mediated buddingarrow_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_forwardThe sequence of amino acids at the 3’ end of a t-RNA molecule is which of the following? a. UGA b. AAC c. AUG d. CCAarrow_forwardThe drugs used against HIV in AIDS therapy are not effective against the flu because a. HIV is an RNA virus and influenza is a DNA virus. b. HIV is a DNA virus and influenza is an RNA virus. c. the two viruses have different-sized genomes. d. the proteins targeted by HIV drugs are not found in influenza.arrow_forward
- what 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_forwardHow 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_forwardDuring the late stage T4 phage infection, the phage DNA is synthesized by Select one: а. the DNA polymerase encoded by T4 genome. the ADP-ribosylated DNA polymerase encoded by E. coli genome. O c. the ADP-ribosylated DNA polymerase encoded by T4 genome. d. the DNA polymerase encoded by E. coli genome.arrow_forward
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