BIOLOGY CONNECT ACCESS CARD 1-SEMESTER
12th Edition
ISBN: 9781264019090
Author: Raven
Publisher: MCG/CREATE
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Chapter 26, Problem 4U
Summary Introduction
Introduction: Temperate bacteriophages are the type of bacteriophage that can display a lysogenic lifecycle. These phages remain dormant until some period of infection.
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After a phage injects its DNA into a bacterial cell, the cell begins making proteins that make up the phage coat. Why does the same thing not happen when a generalized transducing particle injects the DNA it carries?
A prophage replicates
a.
along with its host as long as the lytic genes are not being expressed
b.
along with its host as long as the lytic genes are being expressed
c.
independent of its host as long as the lytic genes are being expressed .
d.
independent of its host as long as the lytic genes are not being expressed .
In Hershey and Chase’s experiment investigating which biological molecule carries genetic information, they found that phage DNA with radiolabeled phosphorus was retained in bacterial cells after transduction. To conclude that DNA is the genetic material, what assumption did they have to make?
A. Protein does not enter the bacterium during transduction.
B. DNA does not stay in the media after transduction.
C. All of the phage DNA was radiolabeled.
D. Bacteria can be transduced by phage.
Chapter 26 Solutions
BIOLOGY CONNECT ACCESS CARD 1-SEMESTER
Ch. 26.1 - Prob. 1LOCh. 26.1 - Prob. 2LOCh. 26.2 - Prob. 1LOCh. 26.2 - Prob. 2LOCh. 26.3 - Prob. 1LOCh. 26.3 - Describe how viruses can contribute DNA to their...Ch. 26.4 - Describe the differences between acute and...Ch. 26.4 - Prob. 2LOCh. 26.4 - Prob. 3LOCh. 26.5 - Prob. 1LO
Ch. 26 - Prob. 1UCh. 26 - Prob. 2UCh. 26 - Prob. 3UCh. 26 - Prob. 4UCh. 26 - Why is a drug that blocks HIV binding to one of...Ch. 26 - Prob. 6UCh. 26 - Prob. 7UCh. 26 - Prob. 1ACh. 26 - Prob. 2ACh. 26 - Prob. 3ACh. 26 - Prob. 4ACh. 26 - Prob. 5ACh. 26 - Prob. 6ACh. 26 - Prob. 7ACh. 26 - E. coli lysogens derived from infection by phage ...Ch. 26 - Prob. 2SCh. 26 - Prob. 3SCh. 26 - Prob. 4SCh. 26 - Prob. 5S
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- Which of the following events occurs in the lytic cycle of bacteriophage T4 infection but NOT in the lysogenic cycle? a.both digestion of host DNA and viral proteins synthesis b.attachment c.viral protein synthesis d.digestion of host DNA e.entryarrow_forwardWhich of the statements about bacteriophage is FALSE: a) specialized transduction is a low frequency event b) may accidently package host DNA into a phage particle c) may perform specialized transduction d) only have a lytic life cyclearrow_forwardIn 2006, the US Food and Drug Administration (FDA) approved the use of bacteriophage preparation that can be used on ready-to-eat meat and poultry products to kill Listeria monocytogenes, a bacterium that causes listeriosis. Some people may have concerns about the use of phages in foods. From what you have learned about bacteriophages and viruses, why do you think we do not have to be concerned about the presence of bacteriophages in food?arrow_forward
- Some strains of Escherichia coli bacteria have acquired the ability to produce the harmful Shiga toxin, normally produced by Shigella dysenteriae. Which statements best explain why this occurs? Mark all that apply. A. conjugation between two different species of bacteria allowed both strains of bacteria to express a virulence factor B. transformation resulted in expression of a virulence factor C. horizontal gene transfer between different species of bacteria D. transduction of a specific gene resulted in expression of new traitsarrow_forwardOne of the reasons why phage therapy has not been applied widely is that bacteria can become resistant to bacteriophages as well, through mutations in genes encoding for specific proteins. What would be a protein in the bacterial cell that, if mutated, would make that cell resistant to phage infection?arrow_forwardWhat would happen to a virus that found its way to an environment filled only with cells that were outside of its host range? a) This virus would evolve until it was able to use the surrounding cells as hosts b) This virus would actively transport itself to another area in search of host cells C) This virus would replicate until it found cells that were within its host range d) Nothing; this virus would not be replicatedarrow_forward
- Eukaryotic viruses a.) Can attach to LPS to promote viral entry b.) Can replicate in the host cell nucleus c.) Can inject their genome into the eukaryotic nucleus d.)Do not utilize host ribosomes for protein synthesis e.) Do not utilize host polymerases for genome replicationarrow_forwardDuring the lytic replication cycle of the bacteriophage T4, the phage _________ remains outside the cell while the phage ________ enters the cell. A) capsid protein… tail fibers B) DNA… protein C) envelope… DNA D) enzymes… ribosome E) protein… genetic material F) RNA… capsid proteinarrow_forwardIn an experiment, scientists grew bacteriophages in a culture with radioactive phosphorus (32P). The phages were then allowed to infect E. coli. a. The phages were then allowed to infect E. coli. Where was the 32P found after mixing with the E. coli?arrow_forward
- Why are encapsolated bacteria generally more pathogenic than un-capsolated strains. a. Because capsule allows the organism to hide in the body of the host. b. because the capsule causes the phagocyte to mutate c. because the capsule protects bacteria from host immune cells d. because the capsule kills the phagocytes e. because the capsule stimulates a potent immune response in the host.arrow_forwardWhich of the processes of information transfer illustrated in Figure are required for the T2 phage reproduction illustrated in Figure ?arrow_forwardWhich of the following statements regarding transduction is FALSE? A) transduction reduces genetic variation within bacterial populations B) the inadvertent packaging of bacterial DNA into a phage particle can lead to generalized transduction C) specialized transduction can only be facilitated by a phage capable of integration into the bacterial genome D) generalized transduction involves the transfer of DNA that is exclusively bacterial E) specialized transduction must be preceded by viral integration and imperfect excision F) specialized transduction involves the transfer of both bacterial and viral DNAarrow_forward
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