Biology 2e
2nd Edition
ISBN: 9781947172517
Author: Matthew Douglas, Jung Choi, Mary Ann Clark
Publisher: OpenStax
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Textbook Question
Chapter 21, Problem 10RQ
Which statement is true of viral replication?
- In the process of apoptosis, the cell survives
- During attachment, the virus attaches at specific sites on the cell surface
- The viral capsid helps the host cell produce more copies of the viral genome
- mRNA works outside of the host cell to produce enzymes and proteins.
Expert Solution & Answer
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Match each stage of the viral replication cycle with the one definition that best describes it.
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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. Assembly
After a virus has entered its host, what factor usually determines the manner (or steps) in which the viral genome is copied and the viral enzymes are produced?
the size of the virion
the number of infecting virus particles
the type of viral genome
the type of viral capsid
produce a diagram of the replication of a viral genome of stranded RNA simple [+] and mRNA production via Reverse Transcriptase.
Produce a diagram of the replication and early maturation of a virus wrapped
Produce a diagram of the replication and early maturation of a virus naked. Produce a diagram of the release of an enveloped virus by budding.
Chapter 21 Solutions
Biology 2e
Ch. 21 - Figure 21.5 Which of the following statements...Ch. 21 - Figure 21.8 Influenza virus is packaged in a viral...Ch. 21 - Figure 21.10 Which of the following statements is...Ch. 21 - Which statement is true? A virion contains DNA and...Ch. 21 - The viral______play(s) a role in attaching a...Ch. 21 - Viruses. all have a round shape cannot have a long...Ch. 21 - The observation that the bacteria genus Chlamydia...Ch. 21 - A scientist discovers a new virus with a linear,...Ch. 21 - Which statement is not true of viral replication?...Ch. 21 - Which statement is true of viral replication? In...
Ch. 21 - Which statement is true of reverse transcriptase?...Ch. 21 - Oncogenic virus cores can be. RNA DNA neither RNA...Ch. 21 - Which is true of DNA viruses? They use the host...Ch. 21 - A bacteriophage can infect the lungs viruses...Ch. 21 - People with the CCR5?32 mutation of a T-cell...Ch. 21 - An apple grower notices that several of his apple...Ch. 21 - Which of the following is NOT used to treat active...Ch. 21 - Vaccines. are similar to viroids are only needed...Ch. 21 - A patient presents at the clinic with an acute...Ch. 21 - Which of the following is not associated with...Ch. 21 - Which statement is true of viroids? They are...Ch. 21 - The first electron micrograph of a virus (tobacco...Ch. 21 - Varicella-zoster virus is a double-stranded DNA...Ch. 21 - Classify the Rabies virus (a rhabdovirus family...Ch. 21 - Why can’t dogs catch the measles?Ch. 21 - One of the first and most important targets for...Ch. 21 - In this section, you were introduced to different...Ch. 21 - Although plant viruses cannot infect humans, what...Ch. 21 - A bacteriophage with a lytic life cycle develops a...Ch. 21 - Why is immunization after being bitten by a rabid...Ch. 21 - The vaccine Gardasil that targets human papilloma...Ch. 21 - Prions are responsible for variant Creutzfeldt...Ch. 21 - How are viroids like viruses?Ch. 21 - A botanist notices that a tomato plant looks...
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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
- Figure 17.6 Influenza virus is packaged in a viral envelope, which fuses with the plasma membrane. This way, the virus can exit the host cell without killing it. What advantage does the virus gain by keeping the host cell alive?arrow_forwardWhich statement is true of viral replication? a. In the process of apoptosis, the cell survives. b. During attachment, the virus attaches at specific sites on the cell surface. c. The viral capsid helps the host cell produce mow copies of the viral genome. d. mRNA works outside of the host cell to produce enzymes and proteins.arrow_forwardFigure 17.5 Which of the following statements about virus structure is true? a. All viruses are encased in a viral membrane. b. The capsomere is made up of small protein subunits called capsids. c. DNA is the genetic material in all viruses. d. Glycoproteins help the virus attach to the host cell.arrow_forward
- Which 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_forwardViral DNA synthesis cannot take place in a resting cell. How is this problem solved? Group of answer choices Early viral proteins like T antigen and E1A inactivate Rb protein Viral late promoters are activated by DNA replication DNA polymerase is encoded in the viral genome VIral DNA genomes have multiple origins of replicationarrow_forwardAll viral genomes contain nucleic acid, either DNA or RNA but not both. Viral replication is the formation of biological viruses during the infection process in the target host cell. Viruses must first enter the host cell before viral replication can occur. After gaining entry into a cell, the viral genome has to be first replicated using either the host DNA polymerase or RNA polymerase You are studying two viruses: Virus A is an enveloped RNA virus Virus B is non-enveloped DNA virus Which of the above viruses is likely to have the lowest mutation rate in the host cell? O Virus A because it uses the host RNA polymerase which has lower error rate than DNA polymerase. O Virus A because it uses the host DNA polymerase which has lower error rate than RNA polymerase. O Virus B because it uses the host DNA polymerase which has lower error rate than RNA polymerase. O Virus B because it uses the host RNA polymerase which has lower error rate than DNA polymerase.arrow_forward
- A virus does not contain ribosomes. How does it manage to ensure the synthesis of its proteins?arrow_forwardViral DNA synthesis cannot take place in a resting cell. How is this problem solved? Which one is correct? Early viral proteins like T antigen and E1A inactivate Rb protein Viral late promoters are activated by DNA replication DNA polymerase is encoded in the viral genome Viral DNA genomes have multiple origins of replicationarrow_forwardFor an RNA virus, what is the most important consideration? how to produce its genetic material as mRNA how to make a DNA intermediate for replication how to produce an RNA strand from DNA how to translate its proteinsarrow_forward
- After replication at the site of entry, some viruses remain localized, while others disseminate. Which of the following does not determine the outcome? Group of answer choices Presence of a lipid membrane on the virion Whether the virus can cross the basement membrane Directional release of virus from polarized cells Establishment of viremia Transport of virions in immune cellsarrow_forwardHow can DNA/RNA viruses trigger cancer by inserting into infected cells chromosomes for a particular Virus ? Mechanism of action of virus genomearrow_forwardWhy would viral genome integration into host cell integration be advantageous to a virus? It enables the virus to kill the cell. It allows the virus to infect cells it would not normally infect. It allows the virus to be passed on to future generations of host cells. It allows the virus to destroy the host cell's DNA. It speeds up viral replication.arrow_forward
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