CAMPBELL BIOLOGY:CONCEPTS & CONNECTIONS
3rd Edition
ISBN: 9781323464175
Author: Pearson
Publisher: PEARSON C
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Chapter 12, Problem 6TYK
When a typical restriction enzyme cuts a DNA molecule, the cuts are uneven, giving the DNA fragments single-stranded ends. These ends are useful in recombinant DNA work because
a. they enable a cell to recognize fragments produced by the enzyme.
b. they serve as starting points for
c. the fragments will bond to other fragments with complementary ends.
d. they enable researchers to use the fragments as molecular probes.
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Students have asked these similar questions
Arrange the following steps in the sequence they would happen in a DNA cloning experiment.
a. sealing DNA fragments into vectors with DNA ligase;
b. utilizing a probe to detect a clone in the library;
c. sequencing the clone's DNA;
d. creating a DNA library of clones;
e. cutting genomic DNA with restriction enzymes.
A.
e,a,d,b,c
B.
a,d,b,c,e
C.
c,b,e,a,d
D.
e,d,a,c,b
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
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.
Chapter 12 Solutions
CAMPBELL BIOLOGY:CONCEPTS & CONNECTIONS
Ch. 12 - Imagine you have found a small quantity of DNA....Ch. 12 - Which of the following would be considered a...Ch. 12 - The DNA profiles used as evidence in a murder...Ch. 12 - A paleontologist has recovered a tiny bit of...Ch. 12 - How many genes are there in a human sperm cell? a....Ch. 12 - When a typical restriction enzyme cuts a DNA...Ch. 12 - Why does DNA profiling rely on comparing specific...Ch. 12 - Recombinant DNA techniques are used to...Ch. 12 - A biochemist hopes to find a gene in human cells...Ch. 12 - Prob. 10TYK
Ch. 12 - Explain how you might engineer E. coli to produce...Ch. 12 - What is left for genetic researchers to do now...Ch. 12 - Today, it is fairly easy to make transgenic plants...Ch. 12 - In the not-too-distant future, gene therapy may be...Ch. 12 - The possibility of extensive genetic testing...Ch. 12 - SCIENTIFIC THINKING Scientists investigate...
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- A contig is a. a set of molecular markers used in gene mapping. b. a set of overlapping fragments that form a continuous stretch of DNA. c. a set of fragments generated by a restriction enzyme. d. a small DNA fragment used in sequencing.arrow_forwardDNA fragments that are 500 bp, 1000 bp, and 2000 bp in length are separated by gel electrophoresis. Which fragment will migrate farthest in the gel? a. The 2000-bp fragment b. The 1000-bp fragment c. The 500-bp fragment d. All will migrate equal distances.arrow_forwardIf 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 organismarrow_forward
- 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 chemistryarrow_forwardA researcher is performing PCR to amplify a sample of DNA. Unfortunately, he forgot to add the DNA primer prior to starting the experiment. Which of the following results is he most likely to observe? a. The reaction will work, but at a significantly slower rate. b. The reaction will work, but the product will contain many undesired mutations. c. The reaction will work, but amplify a region that was not his target. d. The reaction will be completely unsuccessfuarrow_forwardWould it be possible to use human polymerase for the PCR reaction? a. No, because human polymerase does not have the ability to withstand the high temperatures required for the PCR reaction to occur. b. No, because human polymerase cannot be extracted from cells to use in a lab setting. c. Yes, because we are using human DNA as the template DNA. d. Yes, because human polymerase can add bases to a template strand without a primer.arrow_forward
- What is the purpose of the low temperature step in the PCR reaction? a. To allow DNA polymerase to synthesize new DNA in the 3' to 5' direction b. To permanently deactivate DNA polymerase c. To allow primers to anneal to DNA templates d. To allow DNA polymerase to synthesize new DNA in the 5' to 3' directionarrow_forwardPut the following tasks in the order they would occur during a DNA cloning experiment. a. using DNA ligase to seal DNA fragments into vectors b. using a probe to identify a clone in the library c. sequencing the DNA of the clone d. making a DNA library of clones e. cutting genomic DNA with restriction enzymesarrow_forwardWhat is the enzymatic function of restriction enzymes? Group of answer choices a. to cut nucleic acids at specific sites b. to join nucleotides during transcription c. to add new nucleotides to the growing strand of DNA d. to repair breaks in sugar - phosphate backbonesarrow_forward
- Explain how recombinant DNA technology uses restriction enzymes (restriction endonucleases). Explain how recombinant DNA technology uses DNA ligase enzymes.arrow_forwardin Cohen-Boyer's recombinant DNA procedure _______ must be used for both the bacterial DNA and the amphibian DNA _______. a. the same restrictions enzyme, so that the the restriction site are identical in the DNA of each species b. different restriction enzymes, so that the genes outside the restriction site are maintained c. the same restriction enzymes, to ensure that the newly formed DNA can replicate d. different restriction enzymes, to ensure that the newly introducted genes are maintained in the bacterial DNAarrow_forwardChoose the one answer that fits best. Which statement regarding Molecular Biology is NOT correct (videos)? a. Taq Polymerase was isolated from an organism found in Yellowstone Park b. Restriction enzymes leave sticky ends c. DNA sequencing allows us to read DNA sequences d. Restriction enzymes cut DNA at specific sites e. EcoRI and HindII are commonly used polymerasesarrow_forward
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