EBK MICROBIOLOGY:W/DISEASES BY BODY...-
5th Edition
ISBN: 9780134608242
Author: BAUMAN
Publisher: PEARSON
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Chapter 13, Problem 2CT
Summary Introduction
To answer:
The advantages and disadvantages carried out in the lytic cycle and lysogenic cycle by the bacteriophages.
Introduction:
The viruses that invade the bacterial cell are termed to be bacteriophages. The most common known bacteriophages are T4 bacteriophages. These bacteriophages have a complex icosahedral head that contains the genetic material and tail fiber like a hypodermic needle, through which they infect the bacteria with their genome.
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Which statement is true regarding a bacteriophage in the lysogenic cycle?
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A) O The bacteriophage can exit the lysogenic state depending on the condition of host cell
B) O While in this cycle, it would cause no harm to the host cell.
O OAs the host cell divides, the bacteriophage genome will be present in all of the host cell's progeny.
|D) OIt would become a prophage.
E) O All are true statements.
What is the difference between the lytic and lysogenic cycle of bacteriophages?
In the lysogenic cycle, the phage DNA integrates itself into the host genome after penetration, and continues to biosynthesis when conditions change
The host cell is not killed in the lysogenic cycle
The lytic cycle occurs in the nucleus, while the lysogenic cycle occurs in the cytoplasm
In the lysogenic cycle, penetration is achieved through phagocytosis
Discuss retroregulation and its significance in the biology of bacteriophage lambda during:
a) Phage infection
b) Prophage induction
Chapter 13 Solutions
EBK MICROBIOLOGY:W/DISEASES BY BODY...-
Ch. 13 - Why are naked icosahedral viruses able to...Ch. 13 - What characteristics of the genomes of...Ch. 13 - Prob. 3TMWCh. 13 - Prob. 1EDCSCh. 13 - Prob. 4TMWCh. 13 - Prob. 5TMWCh. 13 - Prob. 6TMWCh. 13 - Prob. 7TMWCh. 13 - Prob. 1CCSCh. 13 - Prob. 1MC
Ch. 13 - Prob. 2MCCh. 13 - Prob. 3MCCh. 13 - Prob. 4MCCh. 13 - Prob. 5MCCh. 13 - Prob. 6MCCh. 13 - Prob. 7MCCh. 13 - Prob. 8MCCh. 13 - Prob. 9MCCh. 13 - Prob. 10MCCh. 13 - Prob. 1MCh. 13 - Prob. 1VICh. 13 - Prob. 2VICh. 13 - Prob. 1SACh. 13 - Prob. 2SACh. 13 - Prob. 3SACh. 13 - Prob. 4SACh. 13 - Prob. 5SACh. 13 - What is the difference between a virion and a...Ch. 13 - How is a provirus like a prophage? How is it...Ch. 13 - Prob. 8SACh. 13 - Prob. 9SACh. 13 - Prob. 10SACh. 13 - Prob. 1CTCh. 13 - Prob. 2CTCh. 13 - Prob. 3CTCh. 13 - Prob. 4CTCh. 13 - Prob. 5CTCh. 13 - Prob. 6CTCh. 13 - Prob. 7CTCh. 13 - Why has it been difficult to develop a complete...Ch. 13 - Prob. 9CTCh. 13 - What differences would you expect in the...Ch. 13 - Prob. 11CTCh. 13 - Prob. 12CTCh. 13 - Prob. 13CTCh. 13 - Using the following terms, fill in the following...
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- Describe in general terms how bacteriophage lambda regulates the switch between lytic and lysogenic cyclesarrow_forwardWhat does a bacteriophage accomplish with lysogeny? O 1) it allows the bacteriophage to destroy the host cell's DNA. 2) it enables the bacteriophage to take over the cell. O 3) it speeds up the viral infection cycle. 4) it allows the bacteriophage to infect cells it would not normally infect. O 5) the genetic material of the bacteriophage can be passed on to future generations of infected cells.arrow_forwardWhich of the statements is TRUE about conjugation? a) Plasmid DNA is transferred from a donor (F+) cell b) It may only be performed by competent cells c) DNA is always integrated into recipient chromosome d) It may be specialized or generalizedarrow_forward
- Which 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_forwardWhy must the top agar be supplemented with MgSo4 A) it is required to induce the production of cro repressors B) it is required to induce the production of cI repressors C) it helps stabilize the phage for infection D) it induces the expression of the lamB gene in E. Coliarrow_forwardMost phages that use DNA to propagate work by hijacking host bacterial machinery including RNA Polymerase. Scientists found that treatment of jumbo bacteriophage PhiKZ with Rifampicin did not stop the phage from propagating. What is allowing for the survival of this phage?arrow_forward
- What is wrongly matched? A) None of the above B) Transfer of genetic material from 1 cell to --- conjugation. Another involving cell to cell contact C) Transfer of DNA from 1 cell to another by a Bacteriophage---Transduction D) Bacterial cell in which the F factor has become integrated---HFrarrow_forwardHow does lambda excise and replicate during the lytic cycle? Explain the factors that determinelysis vs. lysogeny.arrow_forwardHow do bacteriophages benefit and harm human hosts?arrow_forward
- What is conjugation? What role do plasmids play in conjugation?arrow_forwardThe mechanism of specialized transduction relies on the improper excision of a bacteriophage genome that is integrated in the host cell chromosom A) O True B) O Falsearrow_forwardBacteriophage T4 lacks its own RNA polymerase.How do T4 genes get expressed or converted to mRNA?What host barriers must be broken before release ofvirions from the host cell?arrow_forward
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