MICROBIOLOGY FUND.:CLINICAL APPR-ACCESS
MICROBIOLOGY FUND.:CLINICAL APPR-ACCESS
3rd Edition
ISBN: 2810022612789
Author: Cowan
Publisher: MCG
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Chapter 15, Problem 1Q

When using pulsed-field gel electrophoresis, mutations in a microbe’s genome will show up as

  1. a. different pattern of bands.
  2. b. nonfluorescent bands.
  3. c. missing bands.
  4. d. all of these.
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Summary Introduction

Introduction:

The genetic methods and genome projects have concluded that there are various microbes that cannot be cultured and using different genotypic methods. These microbes can be identified by giving precise results over phenotypic methods. One of the methods is genetic fingerprinting.

Answer to Problem 1Q

Correct answer:

The different bands are formed of DNA fragments when the mutated DNA is run under pulsed-filed gel electrophoresis. Therefore, option (a) is correct.

Option (a) is given as “a different pattern of bands”.

Explanation of Solution

Justify the reasons for the correct statement:

The technique named Pulsed-field gel electrophoresis (PFGE) is quite similar to typical genetic fingerprinting but the difference lies in the DNA fragments segmentation, which is comparatively large for typical methods. This process involves the segregation of similar-sized fragments by application of slow alternating voltage sequences from three distinct tracks. The differently sized DNA fragments are formed by alteration of DNA sequences when the restriction enzymes act upon it. The sudden outbreaks of infectious and other infections are interpreted using the PFGE.

Hence, option (a) is correct.

Justify the reasons for the incorrect statements:

Option (b) is given as “nonfluorescent bands”.

No fluorescence labeled probed are not used in this process. The fluorescent and nonfluorescent bands will not be formed in a given scenario. Hence, it is a wrong answer.

Option (c) is given as “missing bands”.

The missing bands will not be formed in the PFGE process. Hence, it is a wrong answer.

Option (d) is given as “all of these”.

No fluorescence labeled probed are not used in this process. The fluorescent and nonfluorescent bands will not be formed in a given scenario. Hence, it is a wrong answer.

Hence, options (b), (c), and (d) are incorrect.

Conclusion

The PFGE process involves the formation of different bands.

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Chapter 15 Solutions

MICROBIOLOGY FUND.:CLINICAL APPR-ACCESS

Ch. 15.3 - NCLEX PREX 3. When determining the clinical...Ch. 15.4 - Define the term serology, and explain the...Ch. 15.4 - Identify two immunological diagnostic techniques...Ch. 15.4 - Prob. 2MMCh. 15.5 - Explain why PCR is useful for infectious disease...Ch. 15.5 - Name two examples of techniques that employ...Ch. 15.5 - Explain how whole-genome sequencing can be used...Ch. 15.5 - Prob. 13AYPCh. 15.5 - Prob. 3MMCh. 15.6 - Describe the benefits of lab on a chip...Ch. 15.6 - Prob. 15AYPCh. 15 - When using pulsed-field gel electrophoresis,...Ch. 15 - Explain why it is possible to identify some...Ch. 15 - Serotyping identifies distinct members of the same...Ch. 15 - Prob. 4QCh. 15 - Name some bacterial structures that might be...Ch. 15 - You perform a lumbar puncture on a patient with...Ch. 15 - Which category of diagnosis is represented by...Ch. 15 - Write a paragraph that explains the mycobacterial...Ch. 15 - You inoculated a biochemical test strip with a...Ch. 15 - Prob. 10QCh. 15 - You perform a Kirby-Bauer disk diffusion test to...Ch. 15 - Why might culture conditions affect the results of...Ch. 15 - Which of the following techniques is most likely...Ch. 15 - Why is it more important to use selective media...Ch. 15 - What type of diagnostic method do you think would...Ch. 15 - T or F: Bacterial infection causes the expression...Ch. 15 - Prob. 17QCh. 15 - Prob. 18QCh. 15 - Prob. 19QCh. 15 - When PCR is performed by hand (not with a...Ch. 15 - What kind of a control would be important to run...
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