Biology 2e
2nd Edition
ISBN: 9781947172517
Author: Matthew Douglas, Jung Choi, Mary Ann Clark
Publisher: OpenStax
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Textbook Question
Chapter 14, Problem 12RQ
Which of the following components is not involved during the formation of the replication fork?
- single-strand binding proteins
- helicase
- origin of replication
- ligase
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Which of the following components is not involved during the formation of the replication fork? a. single-strand binding proteins b. helicase c. origin of replication d. ligase
Which of the following enzymes can break, and rejoin, phosphodiester bonds during the normal DNA replication process in the chromosomes of E. coli cells?
single-stranded binding proteins
RNA polymerase
topoisomerase
DNA helicase
DNA ligase
Which of the following replication proteins is incorrectly paired with it’s function?
DNA polymerase - adds nucleotides to the growing strand
Single stranded binding proteins - hold the DNA strands apart while they are being replicated
Ligase - enhances separation of DNA strands
Topoisomerase - relieves torsional stress due to unwinding by the DNA
Primase - synthesizes a short RNA sequence to initiate replication
Chapter 14 Solutions
Biology 2e
Ch. 14 - Figure 14.10 In eukaryotic cells, DNA and RNA...Ch. 14 - Figure 14.14 You isolate a cell strain in which...Ch. 14 - Figure 14.21 A fr am eshift mutation that results...Ch. 14 - If DNA of a particular species was analyzed and it...Ch. 14 - The experiments by Hershey and Chase helped...Ch. 14 - Bacterial transformation is a major concern in...Ch. 14 - DNA double helix does not have which of the...Ch. 14 - In eukaryotes, what is the DNA wrapped around?...Ch. 14 - Meselson and Stahl's experiments proved that DNA...Ch. 14 - If the sequence of the 5'-3' strand is AATGCTAC,...
Ch. 14 - How did Meselson and Stahl support Watson and...Ch. 14 - Which of the following components is not involved...Ch. 14 - Which of the following does the enzyme primase...Ch. 14 - In which direction does DNA replication take...Ch. 14 - A scientist randomly mutates the DNA of a...Ch. 14 - The ends of the linear chromosomes are maintained...Ch. 14 - Which of the following is not a true statement...Ch. 14 - During proofreading, which of the following...Ch. 14 - The initial mechanism for repairing nucleotide...Ch. 14 - A scientist creates fruit fly larvae with a...Ch. 14 - Explain Griffith's transformation experiments What...Ch. 14 - Why were radioactive sulfur and phosphorous used...Ch. 14 - When Chargaffwas performing his experiments, the...Ch. 14 - Provide a brief summary of the Sanger sequencing...Ch. 14 - Describe the structure and complementary base...Ch. 14 - Prokaryotes have a single circular chromosome...Ch. 14 - How did the scientific community learn that DNA...Ch. 14 - Imagine the Meselson and Stahl experiments had...Ch. 14 - DNA replication is bidirectional and...Ch. 14 - What are Okazaki fragments and how they are...Ch. 14 - If the rate of replication in a particular...Ch. 14 - Explain the events taking place at the replication...Ch. 14 - What is the role of a primer in DNA replication?...Ch. 14 - Quinolone antibiotics treat bacterial infections...Ch. 14 - How do the linear chromosomes in eukaryotes ensure...Ch. 14 - What is the consequence of mutation of a mismatch...Ch. 14 - An adult with a history of tanning has his genome...
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- How does DNA replication occur in a precise manner to ensure that identical genetic information is put into the new chromatid? See Figures 8.12 and 8.13. FIGURE 8.12 In DNA replication, the two polynucleotide strands uncoil, and each is a template for synthesizing a new strand. A replicated DNA molecule contains one new strand and one old strand. This mechanism is called semiconservative replication. FIGURE 8.13 A close-up look at the process of DNA replication. (a) As the strands uncoil, bases are added to the newly synthesized strand by complementary base pairing with bases in the template strand. The new bases are linked together by DNA polymerase. (b) DNA synthesis can proceed only in the 5 3 direction; newly synthesized DNA on one template strand is made in short segments and linked together by the enzyme DNA ligase.arrow_forwardmRNA is produced by ___________. a. replication b. duplication c. transcription d. translationarrow_forwardWhy is DNA replication called semiconservative?arrow_forward
- What is the function of DNA polymerase? a. It degrades DNA in cells. b. It adds RNA nucleotides to a new strand. c. It coils DNA around histones to form chromosomes. d. It adds DNA nucleotides to a replicating strand. e. None of these.arrow_forwardDNA replication begins with the pre-replication complex binding to _____________ and beginning to separate the two strands of the helix. the promoter the 3’ end of the DNA the origin the start codonarrow_forward. DNA polymerase II (in E. coli) is specialized for which of the following functions? DNA replication, DNA recombination, and DNA repair both DNA repair and DNA replication both DNA replication and DNA recombination DNA replication only DNA recombination onlyarrow_forward
- Which of the following statements about DNA replication is FALSE? Select one: Unwinding of the DNA molecule occurs as hydrogen bonds break. The new strand of DNA is synthesized from 5’ to 3’ direction. Replication occurs as each base is paired with the same base. In eukaryotes, replication can occur at numerous replication bubbles, each with two forks.arrow_forwardGiven the replication events listed below which even takes place first Single Strand binding proteins bind Primase adds an RNA primer Helicase unwinds the DNA double helix DNA polymerase begins adding DNA nucleotidesarrow_forwardWhether the statement "In a replication bubble, the same parental DNA strand serves as the template strand for leading strand synthesis in one replication fork and as the template for lagging-strand synthesis in the other fork" is true or false.arrow_forward
- "In a replication bubble, the same parental DNA strand serves as the template strand for leading strand synthesis in one replication fork and as the template for lagging-strand synthesis in the other fork" is true or false.arrow_forwardThe DNA content in a cell is exactly double (2N) its original content in the following stages of replication A) G1 B) G0 C) S D) G2 E) Marrow_forwardDNA is synthesized through a process known as ....... translation semiconservative replication transcription conservative replicationarrow_forward
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