Classify each statement as true of generalized transduction or specialized transduction. Generalized transduction Specialized transduction Answer Bank Genes transfer from random sites in the bacterial chromosome. This utilizes lysogenic phages. Genes that transfer depend on the prophage insertion site. This utilizes lytic phages. Phage inserts itself at a specific site in the bacterial chromosome. This requires accidental packaging of bacterial DNA in viral capsids.

Classify each statement as true of generalized transduction or specialized transduction. Generalized transduction Specialized transduction Answer Bank Genes transfer from random sites in the bacterial chromosome. This utilizes lysogenic phages. Genes that transfer depend on the prophage insertion site. This utilizes lytic phages. Phage inserts itself at a specific site in the bacterial chromosome. This requires accidental packaging of bacterial DNA in viral capsids.

Biology 2e

2nd Edition

ISBN:9781947172517

Author:Matthew Douglas, Jung Choi, Mary Ann Clark

Publisher:Matthew Douglas, Jung Choi, Mary Ann Clark

Chapter21: Viruses

Section: Chapter Questions

Problem 3VCQ: Figure 21.10 Which of the following statements is false? In the lytic cycle, new phages are produced...

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Figure 21.10 Which of the following statements is false? In the lytic cycle, new phages are produced and released into the environment. In the lysogenic cycle, phage DNA is incorporated into the host genome. An environmental stressor can cause the phage to initiate the lysogenic cycle. Cell lysis only occurs in the lytic cycle.
Which of the following is true of Generalized transduction? O creates defective virions that are missing the entire phage genome phage and host DNA are both packed in the capsid by error Cha type of Hirgone transfer Frequency is I in 10¹ O occurs during the lysogenic cycle
In generalized transduction.... Choose from the answers below: random fragments of degraded bacterial DNA are packaged in phage particles. the maximum size of transduced DNA fragments is dependent on the size of the phage particles. the transducing DNA fragments are generated by faulty excision of a prophage from the host genome. a and b, but not c b and c, but not a
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.
Define the following terms:a. transpositionb. transposable elementc. bacterial transformationd. transductione. conjugation
Which of the following terms describes bacteriophage DNA that has become integrated into the host cell chromosome? A) plasmid B) impolite phage C) transposon D) prophage
Pathogenic bacteria lysogenized by phages can cause more serious disease than their counterparts that are not lysogenized . Speculate on Whether it is to the bacterium's advantage to cause more serious disease or to cause less serious disease
Most 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?
Host DNA is digested into small pieces, which are occasionally assembled with phage proteins, creating a phage with bacterial chromosomal DNA. If the breakage of the chromosomal DNA is not random (i.e., it is more likely tobreak at certain spots as opposed to other spots), how might suchnonrandom breakage affect cotransduction frequency?
Why is a webbed plate capable of producing a higher lysate titer (pfu/mL) than a cleared plate? a.) A webbed plate has plaques that have gone through more rounds of replication because the number of host cells did not limit phage replication, creating exponentially more phage particles b.) A webbed plate has no more host available for replication, meaning the plate is full of exponentially higher amounts of phage c.) A cleared plate has less bacteria than a webbed plate, so there are more plaques present d.) A cleared plate contains more phage than a webbed plate because it started with a more concentrated phage sample
The transfer of a specific gene from one host cell to another host cell using a virus is called: Generalized transduction Natural competence Conjugation Acquired competence Specialize transduction
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 cycle