Explain how electrophoresis separates DNA strands. a. How is a DNA fingerprinting test interpreted? b. Define plasmid and how plasmids can change a bacteria’s activity. c. How do we digest/cleave plasmids? Explain the role of a restriction enzyme. d. Define sticky end and blunt end and which one is useful in molecular biology.

Explain how electrophoresis separates DNA strands. a. How is a DNA fingerprinting test interpreted? b. Define plasmid and how plasmids can change a bacteria’s activity. c. How do we digest/cleave plasmids? Explain the role of a restriction enzyme. d. Define sticky end and blunt end and which one is useful in molecular biology.

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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a) what are restriction enzymes? b) What is the main function of restriction enzymes in nature? c) Compare and contrast the these enzymes in nature and in scientific research.
Why must a genetically engineered plasmid contain a genetic marker? a.) to prevent the construction of an artificial chromosome b.) to separate cells that contain recombinant DNA from those that do not c.) to produce multiple copies of the recombined plasmid after heat treatment d.) to break apart the circular plasmid and introduce another DNA fragment
The function of a restriction enzyme is to a. prevent the movement of DNA outside the nucleus b. separate the DNA double helix c. cut the nucleotide sequence at a specific location in DNA d. proofread DNA for accidental damages and corrects these errors
Describe how restriction enzymes like EcoR1 are used to create recombinant plasmids and what the process is for using these plasmids to replicate a piece of target DNA. Include information about how to create sticky ends, the makeup of the bacterial plasmid and how to tell if the gene was successfully inserted in the plasmid and if the plasmid has been transformed by the bacteria. You may use a drawing to enhance your description.
From where do we get primers for sequencing DNA? A) they are synthesized by reverse transcriptase B) they are cut out of plasmids using restriction endonucleases C) DNA primase is added to the sequencing reaction and synthesizes the primers D) biotechnology companies synthesize them using organic chemistry
If you knew the sequence of a gene in one organism, how could you determine if another organism had a similar gene? A. insert the known gene into a vector and use the vector to insert the known gene into the other organism B. treat the genomes of both organisms with the same restriction enzyme and compare the patterns of the bands produced with gel electrophoresis C. create a hybrid of the two organisms by breeding them and check for mutations D. create labeled DNA probes from the known gene and use them to search the genome of the other organism
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separates molecules by movement due to size and electrical charge [ Choose ] a. DNA ligase b. gene cloning c. gel electrophoresis d. restriction enzymes
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Explain briefly within 5 sentences each 1. a. What is PCR? Explain/relate its importance in DNA marker analysis. 1.b. What are restriction enzymes (RE)? Describe how a RE can be used to develop/design a DNAmarker.