How is phage therapy different from antibiotic therapy? usually kill many kinds of bacteria, including our beneficial (mutualistic) bacteria, but can be specifically selected to kill one type of harmful (pathogenic) bacteria. a. Plasmids: phage viruses b. Phage viruses; antibiotics Oc. Antibiotics: phage viruses

How is phage therapy different from antibiotic therapy? usually kill many kinds of bacteria, including our beneficial (mutualistic) bacteria, but can be specifically selected to kill one type of harmful (pathogenic) bacteria. a. Plasmids: phage viruses b. Phage viruses; antibiotics Oc. Antibiotics: phage viruses

Concepts of Biology

1st Edition

ISBN:9781938168116

Author:Samantha Fowler, Rebecca Roush, James Wise

Publisher:Samantha Fowler, Rebecca Roush, James Wise

Chapter10: Biotechnology

Section: Chapter Questions

Problem 4RQ: What carries a gene from one organism into a bacteria cell? a. a plasmid b. an electrophoresis gel...

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Why are lytic viruses better suited as agents of “phage therapy” thanare lysogenic viruses? How would you test whether such a treatmentwould be effective? Would you be willing to take a “viral antibiotic”?
Some scientists are trying to engineer bacteriophageto treat bacterial infections in humans when theinfections do not respond to chemical antibiotics.a. What possible advantages might phage therapyhave over antibiotic therapy?b. Describe potential difficulties that would need tobe overcome for phage therapy to succeed.c. How might researchers best confront the issue thatbacterial cells could become resistant to bacteriophage just as they could to antibiotics?
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.
A plasmid (a) can be used as a DNA vector (b) is a type of bacteriophage (c) is a type of cDNA (d) is a retrovirus (e) b and c
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
Which is not a correct association with regard tobioengineering?a. plasmid as a vector—bacteriab. protoplast as a vector—plantsc. RNA virus as a vector—human stem cellsd. All of these are correct.
Which of the following may be used as a vector in a gene-cloningexperiment?a. mRNA c. Virusb. Plasmid d. Both b and c
A virophage is best descirbed as:(a) A bacteriophage that requires a helper virus(b) An animal virus that can also infect bacteria(c) A giant virus(d) A phage that is used therapeutically to treat bacterialinfections(e) A satellite virus that inhabits its helper virus (i.e., itshost virus)
The term "Superbug" refers to? A. Certain bacteria strain that can grow in all kinds of unfavorable conditiions B. Certain bacteria strain is more toxic than all the viruses C. Certain bacteria strain that is resistant to all available antibiotics D. Certain bacteria strain that grows faster than any other strains
Phage conversion in which viruses add genes to a bacterial cell can be considered to be a form of a. standard inheritance. b. horizontal gene transfer. c. vertical gene transfer. d. parasitism.
Which gene is incorporated into plasmids to detect recombinantcells?a. restriction endonuclease b. virus receptors c. a gene for antibiotic resistance d. reverse transcriptase
The addition of DNase to a mixture of donor and recipientcells will prevent gene transfer viaa) DNA transformation.b) chromosome transfer by conjugation.c) plasmid transfer by conjugation.d) generalized transduction.