If mutations occur in DNA, there are several mechanisms by which a cell can repair the defect. One method that can be used is nucleotide extision repair. All of the following characterize nucleotide excision repair, except: DNA ligase will replace the excised DNA and seal the backbone Enzymes can cleave the damaged region DNA can be opened to form a bubble so proteins can access the damaged DNA Can identify thymine dimers

If mutations occur in DNA, there are several mechanisms by which a cell can repair the defect. One method that can be used is nucleotide extision repair. All of the following characterize nucleotide excision repair, except: DNA ligase will replace the excised DNA and seal the backbone Enzymes can cleave the damaged region DNA can be opened to form a bubble so proteins can access the damaged DNA Can identify thymine dimers

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Description: If mutations occur in DNA, there are several mechanisms by which a cell can repair thedefect. One method that can be used is nucleotide extision repair. All of the followingcharacterize nucleotide excision repair, except:DNA ligase will replace the

Human Heredity: Principles and Issues (MindTap Course List)

11th Edition

ISBN:9781305251052

Author:Michael Cummings

Publisher:Michael Cummings

Chapter8: The Structure, Replication, And Chromosomal Organization Of Dna

Section: Chapter Questions

Problem 23QP: How does DNA replication occur in a precise manner to ensure that identical genetic information is...

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All of these DNA-repair mechanisms use an undamaged complementary DNA strand as a template for replacing the excised nucleotides EXCEPT for____ base-excision repair. homologous recombination. mismatch repair. nonhomologous end joining. nucleotide-excision repair
. During DNA repair in prokaryotes and eukaryotes, which of the following enzymes replaces the damaged nucleotides, that were excised from the DNA strand, by inserting the correct nucleotides? topoisomerase DNA polymerase DNA helicase an exonuclease DNA ligase
. DNA polymerase II (in E. coli) is specialized for which of the following functions? DNA replication, DNA recombination, and DNA repair both DNA repair and DNA replication both DNA replication and DNA recombination DNA replication only DNA recombination only
Which of the following about DNA methylation in prokaryotes is FALSE? DNA methylation is catalyzed by DAM methylase on adenine bases. DNA methylation is used by the mismatch repair proteins to distinguish which strand has the correct base when there are mismatched base pairs. Full methylation of both DNA strands depends on the cell's nutrient status Immediately after DNA replication, each daughter helix contains one methylated DNA strand, the newly synthesized strand.
Which enzymes are involved in protein translation? There are multiple answers. Helicase DNA polymerase RNA polymerase DNA ligase single strand binding proteins peptidyl transferase σ unit release factors
Each peak in a chromatogram corresponds to: A fluorescent ddNTP which has been released from the DNA fragment resulting in the termination of synthesis A fluorescent dNTP which has been released from the DNA fragment resulting in the termination of synthesis A fluorescent dNTP which has been incorporated into the DNA fragment resulting in the termination of synthesis. A fluorescent ddNTP which has been incorporated into the DNA fragment resulting in the termination of synthesis
Which of the following statements about DNA strands is true? (You may choose more than one.) Group of answer choices Some genes are transcribed from the template strand, others are transcribed from the non-template strand The promoter determines which strand is the (-) strand The promoter determines which strand is the template strand The template strand is always the (-) strand Some genes are transcribed from the (-) strand, others are transcribed from the (+) strand Some proteins are translated from the - strand and some proteins are translated from the + strand
Some 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.
Which of the following enzymes can break, and rejoin, phosphodiester bonds during the normal DNA replication process in the chromosomes of E. coli cells? single-stranded binding proteins RNA polymerase topoisomerase DNA helicase DNA ligase
Draw replication forks that show what you would expect to see if a cell were unable to make the following enzymes: DNA Polymerase Helicase Primase Ligase
Consider the following segment of DNA, which is part of a linear chromosome: LEFT 5’.…TGACTGACAGTC….3’ 3’.…ACTGACTGTCAG….5’ RIGHT During DNA replication, this double-strand molecule is separated from the right to the left into two single strands and the replisome is moving from the right to the left of the segment. ___________ should be the template for the lagging strand synthesis. neither of the two strands the bottom strand both top and bottom strands the top strand
A cytosine is deaminated, forming uracil. Which DNA repair systems is best able to correct this error?a) CPD photolyase repairb) mismatch repair c) nucleotide-excision repair d) base-excision repaire) homology-directed repair