BIOLOGY
5th Edition
ISBN: 9781265202859
Author: BROOKER
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Chapter 15, Problem 8TY
Summary Introduction
Introduction: The causative agents which cause the phenomenon of mutation are called mutagens. Mutagens can cause the alteration in the genome of an organism, which, most of the times are fatal to the organism’s body. The presence of NER system in the organism’s body helps in the correction of defects produced in the strands of DNA.
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Which type of mechanism best repairs thymidine dimers caused by exposure to UV light?
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Chapter 15 Solutions
BIOLOGY
Ch. 15.1 - Consequences of Mutations Concept Check: Based on...Ch. 15.1 - Prob. 2CCCh. 15.2 - Prob. 1EQCh. 15.2 - Prob. 2EQCh. 15.2 - Prob. 3EQCh. 15.2 - Prob. 1CCCh. 15.3 - DNA Repair Concept Check: Which components of the...Ch. 15.3 - Why is this person so sensitive to sunlight?...Ch. 15.4 - Prob. 1CCCh. 15.4 - Prob. 2CS
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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. 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_forwardWhy 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_forwardWhere does synthesis of the product actually begin in DNA Replication? a. Origin of Replication b. Start Codon c. +1 Start Site d. Primer e. 5'-caparrow_forward
- Which process does NOT use a specific nucleotide sequence for activity? please explain the answer a.replication initiation b.DNA helicase unwinding c.transcriptional termination d.translational terminationarrow_forwardHow would nucleotide excision repair be affected if one of the followingproteins was missing? Describe the condition of the DNAif the repair was attempted in the absence of the protein.A. UvrAB. UvrCC. UvrDD. DNA polymerasearrow_forwardWhich enzyme adds RNA nucleotides to mark the starting point for the synthesis of a new DNA strand? A. DNA polymerase I B. DNA polymerase III C. primase D. helicase The spontaneous loss of amino groups from adenine in dna results in hypoxanthine an uncommon base opposite thymine. what combination of proteins could repair such damage? A. telomerase, primase, DNA polymerase B. nuclease, DNA polymerase, DNA ligase C. telomerase, helicase, single-strand binding protein D. DNA ligase, replication fork proteins, adenylyl cyclase A section of DNA has the following sequence of nitrogenous bases: CGATTACAG. Which of the following sequence would be produced as a result of transcription? A. CGTUUTCTG B. GCTAATGTC C. CGAUUACAG D. GUAAUGUCarrow_forward
- Which of the following statements describe reversal of DNA repair mechanism. A. UV light blocks the translation of mRNA beyond the damaged area B. Reversal of DNA repair mechanism requires a DNA template C. UV light is needed to initiate the formation of pyrimidine dimers D. None of the statement is correctarrow_forwardWhich dna strand will be synthesized continuously during dna replication? a.The strand that is synthesized as Okazki Fragments b.the strand which is synthesized in the opposite direction compared to the direction of DNA unwinding? c.the strand which is sythesized in the same direction as the same direction of DNA unwinding? d.The m-RNA like strand e. The non-template strandarrow_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_forward
- 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.arrow_forwardA fragment of DNA has the sequence 5'-ATCCGCT-3'. Following DNA replication, the complementary strand is 3'-TAAGCGA-5'. What type of mutation occurred? a. Frameshift b. Transversion c. Pyrimidine dimer d. Transitionarrow_forwardWhat attracts or directs the synthesis enzyme to the template in DNA Replication? a. Promoter b. Primer c. 5'-cap d. Poly-A Tail e. Start Codonarrow_forward
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