Campbell Biology in Focus
3rd Edition
ISBN: 9780134710679
Author: Lisa A. Urry, Michael L. Cain, Steven A. Wasserman, Peter V. Minorsky, Rebecca Orr
Publisher: PEARSON
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Chapter 13, Problem 9TYU
Summary Introduction
Introduction:
The mechanism of DNA repair involves a group of proteins like DNA polymerase and DNA ligase after the digestion of enzyme with nucleases. The nuclease enzyme degrades and breaks the DNA chromatin in various fragments. This degradation causes the conversion of adenine to hypoxanthine
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The spontaneous loss of amino groups from adenine in DNA results in hypoxanthine, an uncommon base, opposite thymine. What combination of proteins cold repair such damage?
a. nuclease, DNA polymerase, DNA ligase
b.telomerase, primase, DNA polymerase
c. telomerase, helicase, single-stranded binding protein
d.DNA ligase, replication for proteins, adenylyl cyclase
Which of the following enzymes is responsible for "exposing" or "unwinding" the DNA template (taking it out of its double helix) for DNA Replication?
a.
Topoisomerase
b.
Telomerase
c.
DNA Ligase
d.
Primase
e.
Helicase
Which statement about Okazaki fragments is true?
Select one:
a. DNA polymerase doesn’t need a primer to build these fragments
b. They act as a primer that initiates DNA replication.
c. They correct errors made during earlier phases of DNA replication.
d. They are necessary because DNA polymerase can only build DNA in the 5’ to 3’ direction, so for one of the strands at each fork, the DNA polymerase can only buildaway from the fork.
e. They prevent the ends of chromosomes from shortening with every replication.
Chapter 13 Solutions
Campbell Biology in Focus
Ch. 13.1 - Given a polynucleotide sequence such as GAATTC,...Ch. 13.1 - Prob. 2CCCh. 13.2 - What role does base pairing play in the...Ch. 13.2 - Make a table listing the functions of seven...Ch. 13.2 - MAKE CONNECTIONS What is the relationship between...Ch. 13.3 - Describe the structure of a nucleosome, the basic...Ch. 13.3 - What two properties, one structural and one...Ch. 13.4 - Prob. 1CCCh. 13.4 - DRAW IT One strand of a DNA molecule has the...Ch. 13.4 - Describe the role of complementary base pairing...
Ch. 13 - In his work with pneumonia-causing bacteria and...Ch. 13 - Prob. 2TYUCh. 13 - In analyzing the number of different bases in a...Ch. 13 - The elongation of the leading strand during DNA...Ch. 13 - Prob. 5TYUCh. 13 - Prob. 6TYUCh. 13 - Prob. 7TYUCh. 13 - Prob. 8TYUCh. 13 - Prob. 9TYUCh. 13 - MAKE CONNECTIONS Although the proteins that cause...Ch. 13 - Prob. 11TYUCh. 13 - FOCUS ON EVOLUTION Some bacteria may be able to...Ch. 13 - FOCUS ON ORGANIZATION The continuity of life is...Ch. 13 - Prob. 14TYU
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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
- What can cause mutations in the DNA sequence? Select all that apply. a.Exposure of cells to ionizing radiation b.Failure of repair enzymes to recognize mismatched nucleotides before and during DNA replication c.Recognition of mismatched bases by repair enzymes before and during DNA replication d.Nucleotide errors occurring during DNA replicationarrow_forwardWhich of the following enzymes is responsible for ensuring that genetic material at the end of the chromosome is not lost during DNA replication? a. Helicase b. DNA Polymerase c. Telomerase d. DNA Ligase e. Primasearrow_forwardStrand invasion is often used to repair which of the following damages to DNA? a. Single-strand breaks b. Double-strand breaks. c. Mismatched bases d. Thymine dimers.arrow_forward
- Which of the following enzymes is NOT involved in DNA replication? a. DNA Polymerase b. Primase c. Helicase d. Phosphatase e. DNA Ligasearrow_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_forwardWhich statement about Okazaki fragments is true? Select one: O a. They are necessary because DNA polymerase can only build DNA in the 5' to 3' direction, so for one of the strands at each fork, the DNA polymerase can only build away from the fork. O b. They correct errors made during earlier phases of DNA replication. O c. They act as a primer that initiates DNA replication. O d. They prevent the ends of chromosomes from shortening with every replication. e. DNA polymerase doesn't need a primer to build these fragments.arrow_forward
- DNA polymerases make errors in matching as DNA is synthesized. These errors can be detected and repaired by: A. Ligase B. DNA polymerase C. Primase D. Helicasearrow_forwardSpontaneous mutations can arise from a. all answers are correct b. DNA polymerase inserts an incorrect nucleotide c. a loop occurs during replication d. a base gets damagedarrow_forwardWhat can cause mutations in the DNA sequence? Select all that apply. A. Failure of repair enzymes to recognize mismatched nucleotides before and during DNA replication B. Recognition of mismatched bases by repair enzymes before and during DNA replication C. Exposure of cells to ionizing radiation D. Nucleotide errors occurring during DNA replicationarrow_forward
- Why is an RNA primer necessary for DNA replication a. The RNA primer is necessary for the activity of DNA ligase b. The RNA primer creates the 3’ end for DNA polymerase to add nucleotides c. DNA polymerase can only add nucleotides to RNA d. RNA primer is not necessary for DNA replicationarrow_forwardMatch the enzymes provided from (1-4) in the list of choices with their matching function (A-D) during DNA replication. A. Disrupts hydrogen bonds between DNA bases B. Can only add nucleotides to an existing 3 OH end C. Can't add nucleotides to a chain, but can make covalent bonds D. Actually a specialized form of RNA polymerase select 1. DNA polymerase select 2. Primase select 3. Ligase select v 4. Helicasearrow_forwardA drug that inhibits the DNAa protein is added to a culture of E. coli cells. What is the first step of DNA replication that will be impaired by this drug? PICK ONE ANSWER: A. Keeping parent DNA strands separated B. Releasing tension generated by supercoiling C. Activating the origin of replication D. Making primers E. Forming phosphodiester bondsarrow_forward
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