Principles of Biology
2nd Edition
ISBN: 9781259875120
Author: Robert Brooker, Eric P. Widmaier Dr., Linda Graham Dr. Ph.D., Peter Stiling Dr. Ph.D.
Publisher: McGraw-Hill Education
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Textbook Question
Chapter 9.1, Problem 1BC
Look ahead to Figure 17.10. How does bacterial transformation play a role in the transfer of genes, such as anti-biotic resistance genes, from one bacterial species to another?
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A hypothetical gene for cephalosporin resistance is found to be carried by a transposon. Explain what a transposon is. Then explain how the cephalosporin resistance could be horizontally transferred between organisms by transformation, conjugation, and transduction. What steps/events would have to occur to allow the transposon to be transferred by each method. Also, explain how it could be transferred vertically between organisms.
The figure above shows a schematic of genes and transcription control elements from phage λ. Use this figure as an aid to help you describe the molecular events involved in:
a) The establishment of lysogeny
b) The establishment of a lytic life cycle
Name three ways in which genetic information of bacteria can be changed.
Chapter 9 Solutions
Principles of Biology
Ch. 9.1 - Look ahead to Figure 17.10. How does bacterial...Ch. 9.1 - Prob. 1TYKCh. 9.2 - Prob. 1CCCh. 9.2 - Prob. 2CCCh. 9.2 - Prob. 3CCCh. 9.2 - A nucleotide composed of deoxyribose, phosphate,...Ch. 9.2 - Prob. 2TYKCh. 9.2 - Prob. 3TYKCh. 9.3 - Prob. 1TYKCh. 9.3 - To determine the structure of DNA, Watson and...
Ch. 9.4 - Prob. 1CCCh. 9.4 - Prob. 1TYKCh. 9.4 - Prob. 2TYKCh. 9.5 - Prob. 1CCCh. 9.5 - Prob. 1TYKCh. 9.5 - Prob. 2TYKCh. 9.5 - Prob. 3TYKCh. 9.6 - Prob. 1CCCh. 9.6 - A nucleosome is composed of 146 bp or 147 bp of...Ch. 9.6 - After they have replicated and become compacted in...Ch. 9.6 - Prob. 1BCCh. 9.6 - Which of the following is the correct order for...Ch. 9 - What is/are the main component(s) of chromosomes?...Ch. 9 - Prob. 2TYCh. 9 - Prob. 3TYCh. 9 - Prob. 4TYCh. 9 - Of the following statements, which is correct when...Ch. 9 - Prob. 6TYCh. 9 - Prob. 7TYCh. 9 - Prob. 8TYCh. 9 - Prob. 9TYCh. 9 - The conversion of euchromatin into heterochromatin...Ch. 9 - What are the four criteria that the genetic...Ch. 9 - What are the key features of DNA that allow it to...Ch. 9 - PRINCIPLES A principle of bioloy is that structure...Ch. 9 - Prob. 1CBQCh. 9 - Prob. 2CBQ
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- One 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_forwardExplain how a U-tube apparatus can distinguish between genetic transfer involving conjugation and genetic transfer involving transduction. Do you think a U-tube could be used to distinguish between transduction and transformation?arrow_forwardIn 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 aarrow_forward
- Name 3 ways in which genetic information of bacteria can be changed?arrow_forwardIdentify the most mistaken (wrong) choice: a) Transcription machinery and an enhancer can bind to the chromosome at the same time. b) Organic matters may interfere with heat treatment of bacterial growth control. ( c) Nitrocellulose can be used to filter out microorganisms from a liquid solution. d) Time to kill a bacterial culture is not proportional to the number of microbes in the culturearrow_forwardCompare and contrast the three forms of gene transfer—conjugation, transformation, and transduction—in bacteria.arrow_forward
- Based on the images attached, what does the similarity in the sequences tell you about the ermB gene found in these bacteria? Would we expect high or low sequence similarity when considering the possibility of horizontal gene transfer?arrow_forwardIn Experiment I, you established that beneficial mutations are rare. In Experiment II, you showed that the environment does not affect the probability of a beneficial mutation occurring. Knowing this, why then are mutations responsible for antibiotic resistance in bacteria so common?arrow_forwardWhat is horizontal gene transfer? What are the three mechanisms for this to occur in bacteria? What are the components needed for the processes of transformation, conjugation, and transduction? How does each process occur? What genes are involved in each process? How do generalized and specialized transduction differ? What is the end result of each? What is recombination? What is the importance to bacteria & archaea? What are the two types of recombination? What are the details of each type? What components are needed for each type?arrow_forward
- You have found that two types of bacteria (one large, one small) can undergo horizontal gene transfer. The smaller cells encode the green fluorescent protein (GFP), and the large cells do not glow. You mix the two types of cells together, and allow them to grow together on an agar plate. The next day, you find that some of the larger cells have acquired the gfp gene and now glow green, indicating that the gene has moved from the smaller cells to the larger cells. You want to determine whether this is occurring via conjugation, transformation, or transduction. You have available a few different experimental tools: -Pure cultures of the large, non-glowing bacteria -Pure cultures of the small, gfp-expressing, glowing bacteria -0.2 µm filters (will trap both types of cells, but will let other smaller materials through) -DNase enzyme (degrades DNA) -Fluorescent microscopes and electron microscopes -All other necessary test tubes, liquid growth media, agar plates, etc Briefly outline a…arrow_forwardExplain one other way beyond conjugation, transformation, and transduction to introduce new genes into cells.arrow_forwardGenetic transfer via transformation can also be used to map genes along the bacterial chromosome. In this approach, fragments of chromosomal DNA are isolated from one bacterial strain and used to transform another strain. The experimenter examines the transformed bacteria to see if they have incorporated two or more different genes. For example, the DNA may be isolated from a donor E. coli bacterium that has functional copies of the araB and leuD genes. Let’s call these genes araB+ and leuD+ to indicate the genes are functional. These two genes are required for arabinose metabolismand leucine synthesis, respectively. To map the distance betweenthese two genes via transformation, a recipient bacterium is used that is araB− and leuD−. Following transformation, the recipient bacterium may become araB+ and leuD+. This phenomenon is calledcotransformation because two genes from the donor bacterium have been transferred to the recipient via transformation. In this type of experiment, the…arrow_forward
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genetic recombination strategies of bacteria CONJUGATION, TRANSDUCTION AND TRANSFORMATION; Author: Scientist Cindy;https://www.youtube.com/watch?v=_Va8FZJEl9A;License: Standard youtube license