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, Problem 10TYU
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, 5
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27. Class VI animal viruses include HIV, Based on the type of viral genome, how is this class
distinguished from the other classes of animal virus?
A) It has double stranded RNA.
B) It has single stranded RNA that serves as mRNA (positive sense).
C) It has single stranded RNA that serves as a template for the synthesis of DNA.
D) It has single stranded RNA that serves as a template for mRNA (anti-sense).
does HIV
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, 5
A particular animal virus requires the use of DNA polymerase from its host, since it does not possess its own DNA polymerase enzyme. Which of the following assumptions in A-D would likely be
correct regarding this virus?
A) O This virus could not be a retrovirus type.
B) OIt could be a (-) ss RNA virus.
C) O It could be a (+) ss RNA virus.
D) O The vVirus life cycle very likely includes going to the host cell nucleus.
E) O All ofA-D are correct assumptions.
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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- Which of the following statements are correct for DNA viruses? Mark all that apply. A.The genome consists of dsRNA B. A provirus stage occurs during viral replication C. The genome consists of two identical strands of DNA D. Replication requires reverse transcriptase Replication requires DNA polymerase E.The viral DNA must enter the nucleus for its replication F. Uncoating must occur for the virus to be replicated G.The viral genome acts as a template for production of viral proteinsarrow_forwardSome retroviruses that have a wide host range have been developed for use in treatment of diseases or syndromes. These viruses do not result in a productive infection because they lack critical genes for viral replication, but they do carry DNA sequences that allow them to be packaged into infectious particles. Once in the host cell the viral DNA is released and integrates into the cell's genome. The advantage to this strategy is that the delivery of the DNA is very efficient. What is one possible problem of using a virus that can integrate into the human nuclear genome? Multiple Choice The virus carries genes that will interfere with host cell activities. The viral DNA sequences could still cause a disease. Since the viral DNA sequences no longer contain essential genes for viral replication the host cell may not be able to replicate either. The integration could disrupt an essential gene or genes.arrow_forwardWhich of the following statements are correct for RNA viruses? Mark all that apply. A.Replication requires reverse transcriptase B. Uncoating must occur for the virus to be replicated C.The genome consists of two identical strands of ssRNA D.Replication requires RNA dependent RNA polymerase E. The viral DNA acts as a template for production of viral proteins F.Protease enzyme is required for biosynthesis and maturation of virions G. A provirus stage occurs during viral replicationarrow_forward
- Which of the following are the functions of reverse transcriptase in retroviruses? i) it hydrolyzes the host cell's DNA ii) it uses viral RNA as a template for DNA synthesis iii) it converts host cell RNA into viral DNA iv) it translates viral RNA into proteins v) It uses viral RNA as a template for making complementary RNA strand vi) It degrades RNA from DNA-RNA hybrid Oi, iv and v O ii, iv, v and vi ii and iii ii and viarrow_forwardWhich of the following happens to the viral nucleic acid during a lysogenic cycle cycle? a-the viral DNA immediately takes over the host cell genetic material b-it bursts the host cell c-the viral DNA forms a provirus d-the viral DNA is used to attach the bacteriophage to the host cell`s receptorsarrow_forward19) Which of the following proteins would you expect a mutation in for a virus to infect a new host cell? RNA Dependent RNA polymerase/Reverse Transcriptase/DNA polymerase/etc. Hemagglutinin/Glycoprotein/GP120/etc. Fusion protein Capsid/Nucleocapsid proteins 20) The protein you chose in 19 you chose because it’s responsible for __________________________.arrow_forward
- 1)What are the difference between RNA and DNA? 2)Describe steps of viral replication, what are the differences in the replication between RNA and DNA viruses ?arrow_forwardWhich of the following represents the correct stages (in order) of VIRAL replication? a-Replication, assembly, entry, attachment, lysis b-Lysis, assembly, entry, attachment, replication c-Attachment, entry, replication, assembly, lysis d-Lysis, assembly, replication, entry, attachmentarrow_forwardThe genome of which of the following types of animal virus can act directly as MRNA and be utilized by ribosomes without prior processing? O 1) retroviruses O 2) SSDNA viruses 3) -SSRNA viruses O 4) +SSRNA viruses 5) dsDNA virusesarrow_forward
- 28. Class VI animal viruses include the retroviruses such as HIV, What type of enzyme does HIV introduce into the host cell (white blood cell) when its genome has gained entry? A) Reverse transcriptase B) Restriction enzyme C) DNA polymerase D) RNA polymerase A denovinus-vectorarrow_forwardWhich of the following statements are correct for retroviruses? Mark all that apply. A. Replication requires reverse transcriptase B.The viral genome acts as a template for production of viral proteins C.The genome consists of two identical strands of ssRNA D. Uncoating must occur for the virus to be replicated E. A provirus stage occurs during viral replication F. The genome consists of dsRNA Protease enzyme is required for biosynthesis and maturation of virions H. Replication requires RNA dependent RNA polymerasearrow_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_forward
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