CAMPBELL BIOLOGY IN FOCUS (LL)-W/MOD.MA
3rd Edition
ISBN: 9780135686065
Author: Urry
Publisher: PEARSON
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Chapter 13, Problem 8TYU
Summary Introduction
Introduction:
A student worked in the laboratory and conducted an experiment on the
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A student mixes various molecule needed for DNA replication. When he adds DNA, replication occurs, but each DNA duplex consists of a normal DNA strand paired with numerous segments of DNA a few hundred nucleotides long. What has been left out of the mixture?
A.
NTPs
B.
DNA polymerase III
C.
ATP
D.
DNA polymerase I
E.
DNA ligase
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.
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 replication
Chapter 13 Solutions
CAMPBELL BIOLOGY IN FOCUS (LL)-W/MOD.MA
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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- Which 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_forwardMatch Column A (Description) with Column B (protein/enzyme). v unwinds the double helix of DNA in replication A. RNA polymerase v removes RNA in the newly synthesized polynucleotide B. DNA polymerase v synthesizes MRNA C. Helicase v keep the DNA single stranded D. SSB protein v makes a short section of RNA to act as a primer E. initiation factors v replicates DNA F. Primase v unwinds the double helix during transcription G. DNA polymerase v facilitates translationarrow_forwardMatch the following descriptions with the enzymes involved in DNA replication. 1. Adds an RNA primer to begin elongation 2. Removes the RNA primer from the beginning of the newly constructed strands 3. Splices lagging strand segments 4. Cleaves the rung of the DNA double helix ladder Description: DNA DNA Helicase Primase Enzyme: Polymerase Ligasearrow_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_forwardQUES Place the following enzymes in the correct order, in which they function in DNA replication: DNA polymerase Helicase Ligase Primase a. Helicase, Primase, DNA polymerase, Ligase b. Ligase, Helicase, Primase, DNA polymerase O c. Ligase, Primase, Helicase, DNA polymerase O d. Primase, Ligase, Helicase, DNA polymerasearrow_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
- Arrange the following to the correct sequence that shows the process of DNA replication. 1. Unwinding of DNA and formation of replication fork II. Proofreading of strands and replacing any errors during the synthesis. III. Synthesizing a new strand that matches the template, by extending the primer via the addition of the nucleotides to the 3' end. IV. Formation of semiconservative strandsarrow_forwardThe small pocket of area near the replication fork that contains associated enzymes and proteins involved in DNA replication is called the Select one: a. replication bubble b. replication origin c. replication region d. replication machinearrow_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
- Although prokaryotes and eukaryotes use different versions, what is the general name of the major DNA building enzyme used in replication? Select one: O a. ligase O b. DNA polymerase O c. RNA polymerase O d. primasearrow_forwardPlace the following steps in order to outline how enzymes are involved with proofreading newly formed DNA molecules. 1. DNA polymerase does not detect damaged DNA. 2. Ligase connects the free end of the new DNA with the old DNA. 3. DNA polymerase replaces the damaged DNA with the correct nucleotide. 4. Exonuclease cuts the damaged DNA strand in order to remove the damaged section.arrow_forwardMatch the following type of DNA repair mechanism with the most appropriate definition. Nucleotide excision repair Homologous recombination Base excision repair Nonhomologous end joining A. Repairs thymine dimers by removing a section of the strand B. Corrects damaged bases by removing only the base C. Repairs double strand breaks by joining the ends D. Repairs double strand breaks by copying second chromosomearrow_forward
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