Biology
12th Edition
ISBN: 9780134813448
Author: Audesirk, Teresa, Gerald, Byers, Bruce E.
Publisher: Pearson,
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Textbook Question
Chapter 14.5, Problem 1TC
Restriction enzymes are isolated from bacteria. Why would bacteria synthesize enzymes that cut up DNA? (Hint: Bacteria can be infected by viruses called bacteriophages; see Chapter 12.) Why wouldn't a bacterium's restriction enzymes destroy the DNA of its own chromosome?
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If restriction endonucleases are produced by bacteria within a host, why don’t these enzymes chew up the genomic DNA of their host? What is the role of DNA methyltransferase in this? Indicate the answer
Restriction enzymes look for palindromic sequences of DNA to cut, how does it recognize those sequences? Does it bind to them and read their strands? Does it work with both strands of the DNA or does it just need one strand to work its process?
Restriction enzymes and DNA ligase play essential roles in DNA cloning. How is it that a bacterium that produces a restriction enzyme does not cut its own DNA?
Chapter 14 Solutions
Biology
Ch. 14.1 - define biotechnology?Ch. 14.1 - Prob. 2CYLCh. 14.1 - define GMO and transgenic organism?Ch. 14.2 - describe natural processes that recombine DNA,...Ch. 14.3 - Prob. 1CSCCh. 14.3 - Prob. 1CYLCh. 14.3 - summarize how CRISPR-Cas9 works and explain why it...Ch. 14.4 - For any single person, a given STR always has...Ch. 14.4 - There are many other applications in which DNA...Ch. 14.4 - Prob. 1CYL
Ch. 14.4 - Prob. 2CYLCh. 14.5 - Restriction enzymes are isolated from bacteria....Ch. 14.5 - Many countries regulate the use of genetically...Ch. 14.5 - explain how genes are inserted into a plasmid, and...Ch. 14.5 - Prob. 2CYLCh. 14.6 - Prob. 1CTCh. 14.6 - Prob. 1HYEWCh. 14.6 - describe the advantages of genetically modified...Ch. 14.6 - list some examples of how genetically modified...Ch. 14.6 - Prob. 3CYLCh. 14.7 - Explain how fetal DNA could be used to establish...Ch. 14.7 - explain how biotechnology is used to diagnose both...Ch. 14.7 - describe how transgenic organisms are used to...Ch. 14.7 - describe the procedures and advantages of gene...Ch. 14.8 - explain why people might be opposed to the use of...Ch. 14.8 - Prob. 2CYLCh. 14.8 - Prob. 1CTCh. 14 - Prob. 1MCCh. 14 - Prob. 3MCCh. 14 - A restriction enzyme a. cuts DNA at a specific...Ch. 14 - Prob. 5MCCh. 14 - Prob. 1FIBCh. 14 - _________is the process whereby bacteria pick up...Ch. 14 - The _______ is a technique tor multiplying DNA in...Ch. 14 - Matching DNA samples in forensics uses a specific...Ch. 14 - Prob. 5FIBCh. 14 - Describe two natural forms of genetic...Ch. 14 - Prob. 2RQCh. 14 - Prob. 3RQCh. 14 - Prob. 4RQCh. 14 - Prob. 5RQCh. 14 - Prob. 6RQCh. 14 - How does gel electrophoresis separate pieces of...Ch. 14 - Prob. 8RQCh. 14 - Prob. 9RQCh. 14 - Prob. 10RQCh. 14 - As you may know, many Insects have evolved...Ch. 14 - Prob. 2AC
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Need a deep-dive on the concept behind this application? Look no further. Learn more about this topic, biology and related others by exploring similar questions and additional content below.Similar questions
- Cloning Genes Is a Multistep Process In cloning human DNA, why is it necessary to insert the DNA into a vector such as a bacterial plasmid?arrow_forwardWhich of the following best describes the process of DNA sequencing? a. DNA is separated on a gel, and the different bands are labeled with fluorescent nucleotides and scanned with a laser. b. A laser is used to fluorescently label the nucleotides present within the DNA, the DNA is run on a gel, and then the DNA is broken into fragments. c. Nucleotides are scanned with a laser and incorporated into the DNA that has been separated on a gel, and then the DNA is amplified with PCR. d. Fragments of DNA are produced in a reaction that labels them with any of four different fluorescent dyes, and the fragments then are run on a gel and scanned with a laser. e. DNA is broken down into its constituent nucleotides, and the nucleotides are then run on a gel and purified with a laser.arrow_forwardWhat is a restriction digest? What does it mean if you were given a precut DNA?arrow_forward
- Restriction enzymes and DNA ligase play essential roles in DNA cloning. How is it that a bacterium that produces a restriction enzyme does not cut its own DNA? Describe some general features of restriction sites.arrow_forwardWhich restriction enzyme used in your simulated electrophoresis experiment produced DNA with ‘sticky ends’? Which produced blunt ends? Of these two restriction enzymes, which would you choose to use as donor DNA to graft (or splice) onto a recipient strand of DNA, and why?arrow_forwardIn making recombinant DNA, what is the benefit of using a restriction enzyme that cuts DNA in a staggered fashion?arrow_forward
- Restriction enzymes are referred to as "molecular scissors", justify thatarrow_forwardIf restriction endonucleases are produced by bacteria within a host, why don’t these enzymes chew up the genomic DNA of their host? What is the role of DNA methyltransferase in this?arrow_forwardWhat roles do restriction enzymes, vectors, and host cells play in recombinant DNA studies? What role does DNA ligase perform in a DNA cloning experiment? How does the action of DNA ligase differ from the function of restriction enzymes?arrow_forward
- Do restriction enzymes always cut the DNA at the recognition sequence?arrow_forwardWhy does Northern blotting not require the use of restriction enzymes? a. Restriction enzymes cut at specific sites within DNA is this right?arrow_forwardAn important feature of restriction enzymes is that each enzyme only recognizes a specific palindrome and cuts the DNA only at that specific sequence of bases. A palindromic sequence can be repeated a number of times on a strand of DNA, and the specific restriction enzyme will cut all those palindromes, no matter what species the DNA comes from. A linear DNA molecule is represented below. The DNA is represented by one line, although in actuality, DNA has two strands. If the DNA molecule has two restriction sites, specifically two repeats of a specific palindrome sequence, A and B, for a specific restriction enzyme: How many fragments would be produced if the DNA is cut by that enzyme? Number each fragment Which fragment would be the largest? Which fragment would be the smallest?arrow_forward
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