BIOLOGY
4th Edition
ISBN: 9781266739606
Author: Hoefnagels
Publisher: MCG
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Chapter 17, Problem 5MCQ
Summary Introduction
Introduction:
In bacteria sexual reproduction or exchange of genetic material can happen in three ways. These include conjugation, transduction and transformation. Transduction involves bacteriophage inserting its DNA in a bacterium, transformation involves taking up a foreign DNA by the bacteria from the environment and in conjugation one bacterium transfers some DNA into another bacterium.
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What happens when T2 phages are grown with radioactive phosphorus?
a. Their DNA becomes radioactive.
b. Their proteins become radioactive.
c. Their DNA is found to be medium density in a centrifuge tube.
d. They are no longer able to transform bacterial cells.
e. They transfer their radioactivity to E. coli chromosomes during infection.
...Explain your answer.
For 'transformation' to occur in bacterial cells, certain conditions must be satisfied. Check all the conditions that apply--Select one or more:
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B. transformation resulted in expression of a virulence factor
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D. transduction of a specific gene resulted in expression of new traits
Chapter 17 Solutions
BIOLOGY
Ch. 17.1 - What are two domains that contain prokaryotes?Ch. 17.1 - Prob. 2MCCh. 17.1 - Prob. 3MCCh. 17.1 - Why are most species of prokaryotes little...Ch. 17.2 - Prob. 1MCCh. 17.2 - Prob. 2MCCh. 17.2 - What does the Gram stain reveal about a cell?Ch. 17.2 - Prob. 4MCCh. 17.2 - How are molecular data changing microbial...Ch. 17.2 - Prob. 6MC
Ch. 17.3 - Prob. 1MCCh. 17.3 - Prob. 2MCCh. 17.3 - Prob. 3MCCh. 17.4 - Prob. 1MCCh. 17.4 - Prob. 2MCCh. 17.4 - What adaptations enable pathogenic bacteria to...Ch. 17.4 - What are some practical uses of bacteria and...Ch. 17.5 - Prob. 1MCCh. 17.5 - Prob. 2MCCh. 17 - A prokaryotic cell is one that a. lacks DNA. b....Ch. 17 - Which of these is a distinguishing characteristic...Ch. 17 - What feature distinguishes the cell walls of...Ch. 17 - What type of organism may use inorganic chemicals...Ch. 17 - Prob. 5MCQCh. 17 - Prob. 6MCQCh. 17 - Prob. 7MCQCh. 17 - Prob. 8MCQCh. 17 - Explain why the antibiotics penicillin and...Ch. 17 - Why do some microbiologists disagree with...Ch. 17 - Give five examples that illustrate how bacteria...Ch. 17 - If you were developing a new "broad-spectrum"...Ch. 17 - Describe your own metabolic classification: Are...Ch. 17 - A prokaryote with which type of metabolism would...Ch. 17 - Ernst Mayr defined a biological species as a...Ch. 17 - Why did the discovery of archaea generate interest...Ch. 17 - In an article in Nature magazine, Sean Nee wrote...Ch. 17 - Ecosystems rely on nitrogen -fixing bacteria,...Ch. 17 - Prob. 11WIOCh. 17 - Prob. 12WIOCh. 17 - Prob. 13WIOCh. 17 - Prob. 14WIOCh. 17 - Prob. 15WIOCh. 17 - Mycobacterium tuberculosis causes most cases of...Ch. 17 - Prob. 1PITCh. 17 - Add autotrophs, heterotrophs, phototrophs, and...Ch. 17 - Prob. 3PITCh. 17 - Create a new concept map that includes the...Ch. 17 - Prob. 4PITCh. 17 - Prob. 6PIT
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- The difference between transformation and conjugation in bacteria consists of the fact that: a. only transformation involves the presence of a plasmid b. only conjugation involves the presence of a plasmid c. only conjugation involves the presencce of a sex pilus d. both answers b and c are correct e. none of the above answers arre correctarrow_forwardGenetic information can be transferred horizontally from one bacterial cell to another cell of the "same generation" (versus daughter cells), leading to genetic recombination, by all of the following EXCEPT: A. Gene expression (transcription/translation/protein synthesis) B. Transformation C. Conjugation D. Transduction E. None of the other four answers (all are mechanisms of “horizontal transfer” genetic recombination)arrow_forwardExplain the importance of the following features in conjugating donor bacteria: a. the origin of transfer b. the conjugation pilus c. homologous recombination d. the relaxosome e. relaxase f. T strand DNA g. pillin proteinarrow_forward
- Which of the following is a structure that is not involved in conjugation in bacteria? A. sex pili B. mating bridge C. conjugative pili D. flagellumarrow_forwardWithin prokaryotic organisms, . takes up DNA released by a donor cell that was lysed. is the process of exchanging genetic material that occurs when a host cell Select one: O a. Conjugation O b. Transformation c. Plasmid mediated gene transfer O d. Phage mediated gene transfer O e. Transductionarrow_forwardThe five stages of the bacteriophage lytic cycle occur in this order:a. penetration, attachment, release, maturation, biosynthesis.b. attachment, penetration, release, biosynthesis, maturation.c. biosynthesis, attachment, penetration, maturation, release.d. attachment, penetration, biosynthesis, maturation, release.e. penetration, biosynthesis, attachment, maturation, release.arrow_forward
- 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? (photo linked) 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.arrow_forwardWhich statement(s) indicates one or more benefits of electroporation? A.) Possibility of introducing plasmids into cells B.) Very high transfection rate on neurons C.) Allows marking of endogenous proteins (i.e. naturally produced by the cell) with fluorescent proteins D.) Makes fluorescent cells without adding external productsarrow_forwardDuring transduction via phage P1,a. any small fragment of the bacterial chromosome may betransferred to another bacterium by a phage.b. only a specific fragment of DNA may be transferred to anotherbacterium by a phage.c. any small fragment of the bacterial chromosome may betransferred during conjugation.d. only a specific fragment of DNA may be transferred duringconjugation.arrow_forward
- How can i explain my answers in depth in microbology for example this question: Assume that there are horizontal gene transfers between two completely different bacterial species. In one case it is a plasmid that is transferred via conjugation, in the other case it is a part of the bacterial chromosome that is transferred via transformation. In which of the two cases is it most likely that the transferred DNA will remain and be able to function in the recipient cells? Explain the biological background to your answer . How do I break down the question so I answer it fullyarrow_forwardIn 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.arrow_forwardPhage 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.arrow_forward
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