EBK MICROBIOLOGY:W/DISEASES BY BODY...-
5th Edition
ISBN: 9780134608242
Author: BAUMAN
Publisher: PEARSON
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Textbook Question
Chapter 7, Problem 10MC
Which of the following methods of DNA repair involves enzymes that recognize and correct
- a. light repair of T dimers
- b. dark repair of P dimers
- c. mismatch repair
- d. SOS response
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Students have asked these similar questions
Match 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 chromosome
Which of the following types of DNA damage would be hardest to repair using the DNA repair pathways?A. Complete removal of three nucleotides in the middle of one strand.B. A covalent bond between a base on one strand and a base on the complementary strand.C. Incorporation of a sugar other than deoxyribose into one strand.D. Covalent attachment of a short polypeptide to a single base.E. A covalent bond between a base and a deoxyribose on the same strand.
Please explain why it's B
Strand 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.
Chapter 7 Solutions
EBK MICROBIOLOGY:W/DISEASES BY BODY...-
Ch. 7 - DNA replication requires a large amount of energy,...Ch. 7 - Vibrio vulnificus Infection Greg enjoyed Floridas...Ch. 7 - Prob. 2TMWCh. 7 - Prob. 3TMWCh. 7 - Why is the genetic ancestry of microbes much more...Ch. 7 - Prob. 1CCSCh. 7 - Which of the following is most likely the number...Ch. 7 - Which of the following is a true statement...Ch. 7 - A plasmid is ___________. a. a molecule of RNA...Ch. 7 - Prob. 4MC
Ch. 7 - Prob. 5MCCh. 7 - Which of the following molecules functions as a...Ch. 7 - Prob. 7MCCh. 7 - Prob. 8MCCh. 7 - The Ames test ___________. a. uses auxotrophs and...Ch. 7 - Which of the following methods of DNA repair...Ch. 7 - Prob. 11MCCh. 7 - Prob. 12MCCh. 7 - Which of the following statements is true? a....Ch. 7 - Prob. 14MCCh. 7 - Although two cells are totally unrelated, one cell...Ch. 7 - Prob. 16MCCh. 7 - Prob. 17MCCh. 7 - Prob. 18MCCh. 7 - Prob. 19MCCh. 7 - Prob. 20MCCh. 7 - Prob. 21MCCh. 7 - Prob. 22MCCh. 7 - Prob. 23MCCh. 7 - Before mutations can affect a population...Ch. 7 - Prob. 25MCCh. 7 - Fill in the Blanks 1. The three steps in RNA...Ch. 7 - Fill in the Blanks 2. A triplet of mRNA...Ch. 7 - Fill in the Blanks 3. Three effects of point...Ch. 7 - Fill in the Blanks 4. Insertions and deletions in...Ch. 7 - Fill in the Blanks 5. An operon consists of...Ch. 7 - Prob. 6FIBCh. 7 - Prob. 7FIBCh. 7 - Fill in the Blanks 8. A gene for antibiotic...Ch. 7 - Fill in the Blanks 9. ______ are nucleotide...Ch. 7 - Fill in the Blanks 10. ____________ is a...Ch. 7 - Fill in the Blanks 11.________ RNA carries amino...Ch. 7 - Fill in the Blanks 12. ______ RNA and ______ RNA...Ch. 7 - How does the genotype of a bacterium determine its...Ch. 7 - List several ways in which eukaryotic messenger...Ch. 7 - Compare and contrast intrans and exons.Ch. 7 - Polypeptide synthesis requires large amounts of...Ch. 7 - Describe the operon model of gene regulation.Ch. 7 - Prob. 6SACh. 7 - Prob. 7SACh. 7 - Describe the formation and function of mRNA, rRNA,...Ch. 7 - Prob. 9SACh. 7 - Explain the central dogma of genetics.Ch. 7 - Compare and contrast the processes of...Ch. 7 - Fill in the following table:Ch. 7 - On the figure below, label DNA polymerase I, DNA...Ch. 7 - Prob. 2VICh. 7 - The drugs ddC and AZT are used to treat AIDS....Ch. 7 - If molecules of mRNA have the following nucleotide...Ch. 7 - A scientist uses a molecule of DNA composed of...Ch. 7 - Explain why an insertion of three nucleotides is...Ch. 7 - How could scientists use siRNA to turn off a...Ch. 7 - Prob. 5CTCh. 7 - Prob. 6CTCh. 7 - Prob. 7CTCh. 7 - Prob. 8CTCh. 7 - Corynebacterium diphtheriae, the causative agent...Ch. 7 - Prob. 10CTCh. 7 - The endosymbiotic theory states that mitochondria...Ch. 7 - Hydrogen bonds between complementary nucleotides...Ch. 7 - On average, RNA polymerase makes one error for...Ch. 7 - We have seen that wobble makes the genetic code...Ch. 7 - If a scientist synthesizes a DNA molecule with the...Ch. 7 - What DNA nucleotide triplet codes for codon UGU?...Ch. 7 - Suppose you want to insert into your dog a gene...Ch. 7 - Using the following terms, fill in the following...
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- 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_forwardAll of the following proteins function during nucleotide excision repair, EXCEPT: A. DNA pol B. Uvr A C. Uvr C D. Ligase E. Gyrasearrow_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
- Pyrimidine dimers in DNA may be repaired by in E. coli cells. (select all correct answers) Select one or more: O a. photolyase O b. nucleotide excision repair O c. mis-match repair O d. methyl-transferasearrow_forwardThe general excision repair pathway for DNA repair has the following order A. endonuclease cuts → DNA ligase removes → endonuclease removes → DNA ligase B. DNA ligase → DNA polymerase → helicase or endonuclease removes → endonuclease cuts C. endonuclease cuts → helicase or endonuclease removes → DNA polymerase → DNA ligase D. endonuclease cuts → DNA polymerase repairs → helicase opens up → DNA ligasearrow_forwardWhich of the following mechanisms is involved in double-strand DNA repair? a. Homology-dependent repair b. Nonhomologous end joining c. Mismatch repair d. A and B e. A, B, and Carrow_forward
- 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_forwardList the steps in the correct order of DNA mismatch repair in E. coli Group of answer choices a. Mut S; Mut H; Mut L; Mut H cleaves unmethylated new DNA strand b. Mut H; Mut L; Mut S; Mut H cleaves unmethylated nascent DNA strand c. Mut H; Mut S; Mut L; Mut H cleaves unmethylated nascent DNA strand d. Mut L; Mut H; Mut S; Mut H cleaves unmethylated nascent DNA strandarrow_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_forward
- Which of the following statements is TRUE concerning the synthesis of the leading and lagging strands of DNA in prokaryotic cells? a. O b. The leading strand is synthesized by one polymerase III continuously, and the lagging strand is synthesized by several molecules of DNA polymerase III. d. The leading and lagging strands are synthesized at the same time by the one DNA polymerase I. O c. The leading and lagging strands are synthesized at the same time by the one DNA polymerase III. The leading strand is synthesized by one polymerase III, and the lagging strand is synthesized by DNA polymerase I.arrow_forwardPlace the following steps of DNA replication and repair in the correct order by numbering them from 1 to 5. a. A template strand begins to be replicated. b. If the incorrect base is not identified and replaced, it remains as a point mutation in the DNA. c. DNA polymerase identifies and replaces most incorrect bases with the correct base, complementary to the base on the template strand. d. An incorrect base is added to the growing strand of DNA. e. Proteins identify and replace any incorrect bases missed by DNA polymerase.arrow_forwardSome antibiotic drugs fight infection by interfering with DNA replication, transcription, or translation in bacteria. Indicate whether each of the following antibiotic drug effects is on replication, transcription, or translation. HINT Each answer (replication, transcription, and translation) is used only once for the following: a. Rifampin binds to bacterial RNA polymerase. b. Streptomycin binds bacterial ribosomes, disabling them. c. Quinolone blocks an enzyme that prevents bacterial DNA from unwinding.arrow_forward
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