Microbiology: An Introduction
12th Edition
ISBN: 9780321929150
Author: Gerard J. Tortora, Berdell R. Funke, Christine L. Case
Publisher: PEARSON
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Textbook Question
Chapter 13, Problem 5MCQ
An example of lysogeny in animals could be
- a. slow viral infections.
- b. latent viral infections.
- c. T-even bacteriophages.
- d. infections resulting in cell death.
- e. none of the above
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Students have asked these similar questions
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
Which of the following statements is not true?
Select one:
a. Viruses multiply inside living cells using viral - mRNA, tRNA & ribosomes.
b. Viruses multiply inside living cells.
c. Viruses contain DNA or RNA.
d. The nucleic acid of a virus is surrounded by a protein coat.
e. Viruses cause the synthesis of specialized infectious elements.
A researcher, studying two different animal viruses (A and B) that infect the same cell type, digests away all the protein and transfers the nucleic acid directly into the host cell. Only virus B causes the infection. This suggests:
a. Virus A is likely to be a naked virus.
b. Virus A is likely to be an enveloped virus.
c. Virus A is likely to be a -ssRNA virus.
d. Virus A is likely to be a +ssRNA virus.
e. Virus A is likely to be a dsDNA virus.
And now explain why.
Chapter 13 Solutions
Microbiology: An Introduction
Ch. 13 - Why do we classify viruses as obligatory...Ch. 13 - List the four properties that define a virus, what...Ch. 13 - Describe the four morphological classes of...Ch. 13 - DRAW IT Label the principal events of attachment,...Ch. 13 - Compare biosynthesis of a + stranded RNA and a ...Ch. 13 - Prob. 6RCh. 13 - Why is it difficult to determine the etiology of a...Ch. 13 - Prob. 8RCh. 13 - Plant viruses can be cultured in (c) __________.Ch. 13 - NAME IT Identify the viral family that infects...
Ch. 13 - Prob. 1MCQCh. 13 - The molecule serving as mRNA can be incorporated...Ch. 13 - Prob. 3MCQCh. 13 - Prob. 4MCQCh. 13 - An example of lysogeny in animals could be a. slow...Ch. 13 - The ability of a virus to infect an organism is...Ch. 13 - Which of the following statements is false? a....Ch. 13 - Prob. 8MCQCh. 13 - Prob. 9MCQCh. 13 - Prob. 10MCQCh. 13 - Discuss the arguments for and against the...Ch. 13 - In some viruses, capsomeres function as enzymes as...Ch. 13 - Why was the discovery of simian AIDS and feline...Ch. 13 - Prophages and proviruses have been described as...Ch. 13 - Prob. 1CAECh. 13 - A newborn female developed extensive vesicular and...Ch. 13 - Prob. 3CAE
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- An example of an emerging virus isa. phage λ.b. HIV that causes AIDS.c. a strain of influenza virus called H1N1 that causes the flu.d. both b and c.arrow_forwardA means of introducing a cloned gene into cells for gene therapyis viaa. liposomes.b. retroviral vectors.c. T-DNA vectors.d. both a and b.arrow_forwardFind the wrong information about virus attachment and absorption to host cell. A. The surface capsid proteins of naked viruses bind to a specific cell receptor on host cell. B. For enveloped viruses, the spikes are responsible for binding to a specific cell receptor. C. A cell lacking a receptor for a specific virus is not infected by that virus. D. Animal viruses, such as HIV are highly specific and they can only infect particular cell types. E. All of these are true.arrow_forward
- after a successful infection by a viral particle, it integrates its genome into the host DNA. which term best describe the change of host genome? a. none b.silent mutation c.missense mutation d.frame shift mutationarrow_forwardWhich of the following is NOT a method by which bacteria can be resistant to antibiotics? Select one: a. Utilise an alternate pathway of gene expression that is not targeted by the antibiotic. b. Alter the binding site of the antibiotic, to either prevent it binding, or remove it from the site. c. Production of enzymes that bind to and break down the specific antibiotic. d. Production of a cell membrane pump that translocates antibiotics outside the cell. A potential side effect of antibiotic use is a secondary bacterial or fungal infection, usually associated with regions like the skin, upper-respiratory tract or genitalia. What is the most likely reason for the formation of these secondary infections? Select one: a. Antibiotics do not work on viruses, so they are able to establish infections in these locations. b. Organisms that are antibiotic resistant are usually more virulent, meaning they can survive and cause infection. c. The antibiotic kills off normal flora, providing an…arrow_forwardmRNA vaccines are better than DNA vaccines because A. their sequences can be easily modified. B. they can be easily scaled up. C. they can be easily degraded. D. they are single-stranded molecules. E. they do not integrate into the host DNA. O O O Oarrow_forward
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