Photoreactivation is called a direct reversal of DNA damage. Mismatch repair, Nucleotide excision repair and base...
Photoreactivation is called a direct reversal of DNA damage. Mismatch repair, Nucleotide excision repair and base excision repair correct DNA mismatches and damaged bases, but these systems are not considered direct repair. what two general steps do these indirect repair systems have in common?.
Homework Answers
Add Answer to:
Photoreactivation is called a direct reversal of DNA damage.
Mismatch repair, Nucleotide excision repair and base...
Which of the examples listed is not a DNA repair mechanism? direct repair base‑excision repair nucleotide‑excision...
Which of the examples listed is not a DNA repair mechanism? direct repair base‑excision repair nucleotide‑excision repair insertion sequence repair mismatch repair
Which DNA repair process begins with N-glycosylase reaction, followed by repair enzymes that excise one or...
Which DNA repair process begins with N-glycosylase reaction, followed by repair enzymes that excise one or more nucleotides at the abasic site? ► View Available Hint(s) mismatch repair systems O base excision repair O photoreactivation O Nucleotide excision repair Submit
Can you please explain in detail DNA repair mechanisms from a biochemical point of view (direct...
Can you please explain in detail DNA repair mechanisms from a biochemical point of view (direct reversal of damage- DNA methyltransferase, DNA photolyase, base excision repair- DNA glycosylase and nucleotide excision repair, as well as mismatch repair and SOS response and recombination repair) I really need your help. I will be forever grateful. And if I may ask you one thing if you copy from the internet please put the citations, or links. Thank you in advance!!!
1.Which of the following DNA repair systems involving DNA N-glycosylasesrecognizes an abnormal DNA nucleotide (i.e. uracil)...
1.Which of the following DNA repair systems involving DNA N-glycosylasesrecognizes an abnormal DNA nucleotide (i.e. uracil) and cleaves the bond between it and the sugar? - Mismatch repair -Base excision repair -Non-homologous end-joining repair -Homologous recombination repair 2. self-splicing is the most common mechanism for splicing mRNA transcribed from eukaryotic, nuclear, structural genes - true or false 3. True or False, during elongation of transcription, RNA polymerase is primarily in a closed complex
Which of the following is NOT a DNA repair mechanism? a. base excision in which bulky...
Which of the following is NOT a DNA repair mechanism? a. base excision in which bulky lesions are removed and replaced with the original nucleotides b. direct repair of a modified base to the original structure c. repair of mismatched bases to the original pair of nucleotides on opposite strands d. replacement of nucleotides without the use of the complementary strand as a template e. all of the above
Which are true about direct repair of DNA? O The damaged base is excised and a...
Which are true about direct repair of DNA? O The damaged base is excised and a new segment of DNA is synthesized to fill in the gap. Error-prone DNA polymerases are used to insert a nucleotide opposite to the damaged base. O A damaged base is restored to its correct structure without removing it from the DNA. O DNA ligase is needed. O Methylation marks can be used to distinguish the correct strand from the incorrect strand.
Repair of DNA damage from UV radiation DNA damage from UV radiation needs to be repaired...
Repair of DNA damage from UV radiation
DNA damage from UV radiation needs to be repaired if
DNA replication occurs without error. the following plot shows how
cell survival is affected in the presence of UV radiation. Notice
that the wild-type cells can overcome the damaging effects of UV
radiation on DNA and show high survival even as UV increases.
However, cells deficient in certain genes display relatively much
lower survival rates.
1. the fact that the double mutant shows...
13) The number of new mutations in a given gene per cell generation is called? B)...
13) The number of new mutations in a given gene per cell generation is called? B) mutation rate C) recombination frequeney 14) A type of spontaneous mutation that occur when a purine base is removed from the DNA is A) deamination D) alkylate bases В) apurination E) base analog C) thymine dimers 15) A type of spontaneous mutation that involves a temporary change in the base conformation because the keto group may change to an enol functional group or amino...
1. In eukaryotes, which DNA polymerase is primarily responsible for filling in the gaps in the...
1. In eukaryotes, which DNA polymerase is primarily responsible for filling in the gaps in the DNA generated during base excision repair? DNA polymerase α DNA polymerase β DNA polymerase γ DNA polymerase ö DNA polymerase μ 2. High energy electromagnetic radiation includes which of the following? ultraviolet light x-rays gamma rays two of the above all three of the above 3. Which of the following types of damage to DNA cannot be caused by x-rays and gamma rays? deletions...
Ionizing radiation and oxidative damage can cause DNA double-strand breaks. A. True. B False Nucleotide Excision...
Ionizing radiation and oxidative damage can cause DNA double-strand breaks. A. True. B False Nucleotide Excision Repair involves recognition of distortions in the DNA double helix rather than specific base changes. A. True. B False Homologous recombination does not occur in prokaryotic cells. A. True. B False Many chemotherapeutic agents are paradoxically DNA damaging agents A. True. B False Meiot.c recombination starts with, double-strand break caused by errors In DNA replication A. True. B False ONA replication origins are typically...
Which DNA repair process begins with N-glycosylase reaction, followed by repair enzymes that excise one or more nucleotides at the abasic site? ► View Available Hint(s) mismatch repair systems O base excision repair O photoreactivation O Nucleotide excision repair Submit
Which are true about direct repair of DNA? O The damaged base is excised and a new segment of DNA is synthesized to fill in the gap. Error-prone DNA polymerases are used to insert a nucleotide opposite to the damaged base. O A damaged base is restored to its correct structure without removing it from the DNA. O DNA ligase is needed. O Methylation marks can be used to distinguish the correct strand from the incorrect strand.
Repair of DNA damage from UV radiation
DNA damage from UV radiation needs to be repaired if
DNA replication occurs without error. the following plot shows how
cell survival is affected in the presence of UV radiation. Notice
that the wild-type cells can overcome the damaging effects of UV
radiation on DNA and show high survival even as UV increases.
However, cells deficient in certain genes display relatively much
lower survival rates.
1. the fact that the double mutant shows...
13) The number of new mutations in a given gene per cell generation is called? B) mutation rate C) recombination frequeney 14) A type of spontaneous mutation that occur when a purine base is removed from the DNA is A) deamination D) alkylate bases В) apurination E) base analog C) thymine dimers 15) A type of spontaneous mutation that involves a temporary change in the base conformation because the keto group may change to an enol functional group or amino...
Ionizing radiation and oxidative damage can cause DNA double-strand breaks. A. True. B False Nucleotide Excision Repair involves recognition of distortions in the DNA double helix rather than specific base changes. A. True. B False Homologous recombination does not occur in prokaryotic cells. A. True. B False Many chemotherapeutic agents are paradoxically DNA damaging agents A. True. B False Meiot.c recombination starts with, double-strand break caused by errors In DNA replication A. True. B False ONA replication origins are typically...
Most questions answered within 3 hours.
-
1- What is the energy of a photon with a frequency of 7.01 ×
10¹⁴ s⁻¹?...
asked 27 seconds from now -
Illustrate the Substitution Effect, Income Effect and Total
Effect of a normal good and an inferior...
asked 1 minute ago -
Cesar needs to make a decision whether to fertilize his garden
or not. His profit depends...
asked 2 minutes ago -
Your company has six-sigma conformance for each of 10 component
that are a part if a...
asked 14 minutes ago -
Explain the buffering components of urine, the chemical
equation, where the system is found and find...
asked 20 minutes ago -
The financial records of Leon Paul Inc. were destroyed by fire
at the end of 2017....
asked 22 minutes ago -
The normal-curve approximation can also be used for discrete
distribution other than the binomial distribution. For...
asked 52 minutes ago -
1. Find the following z values for the standard normal
variable Z. (You may find it...
asked 48 minutes ago -
Lakeside Motors will sell you a $9000 car for $225 a month for 60
months. What...
asked 38 minutes ago -
how immigrants foster innovations and how it lead to economic
growth of the host country????
"Not...
asked 50 minutes ago -
What are some of the methods that creditors use to
reduce risk in credit transactions?
asked 44 minutes ago -
1 Explain HOW you would use the scientific method to test
which helps kids lose weight:...
asked 51 minutes ago