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 18RQ
During proofreading, which of the following enzymes reads the DNA?
- primase
- topoisomerase
- DNA pol
- helicase
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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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- DNA Profiles as Tools for Identification STRs are: a. used for DNA profiles b. repeated sequences present in the human genome c. highly variable in copy number d. all of these e. none of thesearrow_forwardgenerated after a cDNA library is made unique sequences in the genome useful for mapping using sequence information all of the abovearrow_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_forward
- All of the following are required to create a cDNA library EXCEPT: Group of answer choices DNA polymerase. dNTPs. reverse transcriptase. mRNAs. RNA polymerase.arrow_forwardWhich of the following enzymes at the bacterial replication fork hydrolyze ATP for their activity? (Select all that apply) DNA Ligase DNA Polymerase I DNA primase PCNA SSB DNA helicase DNA Polymerase III Clamp Loaderarrow_forwardWhich of the following enzymes has 5’ to 3’ exonuclease activity? DNA ligase DNA polymerase I Telomerase Primase DNA polymerase IIIarrow_forward
- Which of the following enzymes relaxes the DNA double helix to avoid tensional force from supercoiling? DNA Ligase DNA Helicase DNA Gyrase/Topoisomerase DNA Polymerasearrow_forwardWhich of the following enzymes ensures that the correct base of a deoxynucleotide for growing the chain is aligned with template chain? DNA gyrases DNA ligases DNA polymerases primasesarrow_forwardWhich of the following substances adds equivalent DNA nucleotides to the 3' end of Okazaki fragments after primers are removed? Group of answer choices helicase DNA ligase DNA polymerase I DNA polymerase IIIarrow_forward
- For what purposes is DNA extraction done? (give at least 3 purposes for which you may need to extract DNA)arrow_forwardWhat enzyme proofreads the DNA molecule? Group of answer choices DNA gyrase DNA polymerase I DNA helicase DNA polymerase IIIarrow_forwardWhich of the following are necessary for Sanger sequencing? Select all correct answers. Group of answer choices ddNTPs an oligonucleotide primer DNA polymerase dNTPs DNA ligase a restriction enzymearrow_forward
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