Biology
11th Edition
ISBN: 9781259188138
Author: Peter H Raven, George B Johnson Professor, Kenneth A. Mason Dr. Ph.D., Jonathan Losos Dr., Susan Singer
Publisher: McGraw-Hill Education
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Textbook Question
Chapter 14, Problem 7A
The synthesis of telomeres
a. uses DNA polymerase, but without the sliding clamp.
b. uses enzymes involved in DNA repair.
c. requires telomerase, which does not use a template.
d. requires telomerase, which uses an internal RNA as a template.
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Students have asked these similar questions
Cancer cells can divide much longer than most other cells. One possible reason is the presence of telomerase in cancer cells. How might telomerase aid cancer cells?
A. It proofreads the telomere sequences.
B. It increases the length of the telomeres.
C. It decreases the length of the telomeres.
D. It stabilizes the bonds in the telomeres.
Which of the following describes sequencing by synthesis?
A. Large sections of DNA are inserted into a plasmid.
B. DNA sequence is recorded as the complementary strand is built.
C. Many copies of the DNA are made, each terminating at a specific nucleotide.
D. A DNA strand is forced through a pore and its sequence synthesized as it passes through.
when a cell to divide, its DNA must be replicated (copied).
a.List the most important participating components and their functions in replication
b.why is it important that the replication goes right and that relatively few mutations occur during the replication?
c.Will the offspring of the individual who received a mutation inherit the mutation
Chapter 14 Solutions
Biology
Ch. 14 - Prob. 1UCh. 14 - Which of the following is NOT a component of DNA?...Ch. 14 - Chargaff studied the composition of DNA from...Ch. 14 - The bonds that hold two complementary strands of...Ch. 14 - Prob. 5UCh. 14 - Prob. 6UCh. 14 - Which of the following is NOT pan of the...Ch. 14 - If one strand of a DNA is 5 ATCGTTAAGCGAGTCA 3,...Ch. 14 - Hershey and Chase used radioactive phosphorus and...Ch. 14 - The Meselson and Stahl experiment used a density...
Ch. 14 - Prob. 4ACh. 14 - If the activity of DNA ligase was removed from...Ch. 14 - Successful DNA synthesis requires all of the...Ch. 14 - The synthesis of telomeres a. uses DNA polymerase,...Ch. 14 - When mutations that affected DNA replication were...Ch. 14 - Prob. 1SCh. 14 - In the Meselson-Stahl experiment, a control...Ch. 14 - Enzyme function is critically important for the...
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- When E. coli cells are mixed with recombinant vector DNA and subject to a stress such as heat shock, a small fraction of the cells will take up the plasmid DNA, a process known as : A. Ligation. B. Transformation. C. Transfection. D. Digestion.arrow_forwardThe elongation of leading strand during DNA synthesis a. progresses away from the replication fork. b. occurs in the 3'-5' direction c. does not require a template strand d. depends on the action of DNA polymerasearrow_forwardDuring DNA replication: A. The two DNA strands separate, each strand then becomes a template for the assembly of a complementary strand. Each new DNA helix has one old strand with one new strand. B. The two DNA strands separate, each strand then becomes a template for the assembly of a similar strand. Each new DNA helix has one old strand with one new strand. C. The two DNA strands separate, each strand then becomes a template for the assembly of a similar strand. Each new DNA helix has two new strands. D. The two DNA strands separate, each strand then becomes a template for the assembly of an identical strand. Each new DNA helix has one old strand with one new strand.arrow_forward
- Which of the following one is liable for the conversion of covalently closed circular DNA to super coiled DNA of the plasmid? a.Exonuclease b. DNA Gyras c. Endonuclease d. Topoisomerasearrow_forwardWhich of the following is the most likely effect of a mutation in the gene coding for a DNA repair enzyme? a.The mutated gene will not be transcribed because RNA polymerase cannot transcribe mutated DNA. b.Mutations will accumulate more quickly because the cell will not be able to fix errors in replication. c.The cell will immediately undergo apoptosis so that mutated DNA is not replicated in future rounds of cell division. d.The cell containing the mutation will divide more frequently because the cell cycle checkpoints will not function properly.arrow_forwardThe enzyme responsible for adding new nucleotides to a growing DNA chain during DNA replication is a. helicase. b. RNA polymerase. c. DNA polymerase. d. DNA ligase.arrow_forward
- In an EMSA, the binding of a protein to DNAa. prevents the DNA from being digested with a restrictionenzyme.b. causes the DNA to migrate more slowly through a gel.c. causes the DNA to migrate more quickly through a gel.d. inhibits the expression of any genes within the DNA.arrow_forwardExplain 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.arrow_forwardWhich of the following is NOT true of DNA polymerase? a. DNA polymerase builds the new strand from 5' to 3'. b. DNA polymerase can start new DNA strands independently. c. DNA polymerase uses a "guess and check" method to add nucleotides. d. DNA polymerase uses dATP as a nucleotide. e. DNA polymerase reads the template from 3' to 5'.arrow_forward
- Which of the following describes an advantage of using a recombinant plasmid for DNA cloning over PCR? A. PCR is more likely to have errors introduced in the copying process. B. Recombinant DNA plasmids are able to create large amounts of copies more quickly than PCR. C. PCR can only be conducted in eukaryotic cells. D. PCR requires prior knowledge of the sequence in question, while a recombinant plasmid does not.arrow_forwardWhich of the following statements accurately describes the process of DNA replication? A. The two strands of DNA separate, and a single new strand is synthesized using the existing strand as a template. B. The two strands of DNA separate and serves as a template, and the daughter molecule will have a mix of an old and new strand. C. The two strands of DNA separate and serves as a template, and the daughter molecule will have one old strand and one new strand. D. The two strands of DNA separate, and each strand serves as a template for the synthesis of multiple new complementary strands.arrow_forwardDNA replication involves a series of steps, including initiation, making primers, extension, and connecting DNA fragments. The cell uses different enzymes in a particular order to accomplish these steps. Which of the following represents the correct general order of enzyme use? A. DNA polymerases, helicase, primase, ligase B. Helicase, ligase, primase, DNA polymerases C. Helicase, primase, DNA polymerases, ligase D. Primase, helicase, DNA polymerases, ligasearrow_forward
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