"The mechanism does not recruit a homologous region of DNA during repair". Explain this ?

Q: How is the DNA unwound at the replication fork? What effect does this have on the DNA upstream of…

A: DNA It is a double stranded helical structure present in almost all eukaryotic cell.

Q: Based on what you have learned with respect to various DNA repair pathways, decide the most…

A: Introduction  DNA stands for deoxyribonucleic acid, which is a complex molecule that contains the…

Q: DNA ligase has the ability to relax supercoiled circular DNA in the presence of AMP but not in its…

A: DNA ligase is the enzyme connecting two DNA strands together. It does so by bonding the phosphate…

Q: Explain if any mismatched nucleotides in RNA primer becomes substrate for mismatched repair enzyme.

A: Living creatures begin the production of DNA strands with RNA primers. Prior to DNA replication, the…

Q: Describe the function of DNA polymerase. Explain why each part of the name DNA polymerase (DNA,…

A: DNA polymerase DNA is replicated by enzymes known as DNA directed DNA polymerases or simply DNA…

Q: List mechanisms by which cells can repair DNA withaltered or damaged nucleotides.

A: The errors that occur in different cell processes are corrected by a set of damage repair mechanisms…

Q: Which components of NER are responsible forremoving the damaged DNA?

A: Nucleotide excision repair can be defined as the DNA repair mechanism. DNA damage occurs constantly…

Q: (b) How many forms can naturally occurring DNA exist in? Explain how these forms are characterized.…

A: DNA  Deoxyribonucleic acid  Genetic material in many species Has ds(double stranded) structure…

Q: DNA-driven DNA synthesis forms hydrogen bonds with antisense bases. True or False?

A: Antisense is the non-coding DNA strand of a gene. In the cell, the antisense DNA fills in as a…

Q: Which of the following is true of DNA repair?

A: DNA repair is the process by which a cell identifies any damage in the DNA and rectifies it. It is…

Q: Match the DNA repair mechanism to the type of repair it fixes.   Base excision repair DNA polymerase…

A:

Q: Why would a cell use SOS repair, considering that it introduces mutations?

A: Answer :- Sos reaction is extreme arrangement when the DNA harm is high that on the off chance that…

Q: Recent data indicate, as mentioned in the text, that the signal for eukaryotic mismatch repair, for…

A: The process of DNA synthesis is also known as DNA replication wherein a new daughter DNA molecule is…

Q: Contrast the various types of DNA repair mechanisms known to counteract the effects of UV radiation.…

A: A variation is an adjustment in a DNA grouping. Changes can result from DNA duplicating botches made…

Q: Explain why base excision repair, nucleotide excision repair, and mismatch repair—which all require…

A: Mutations are changes that occurs in the deoxyribonucleic acid (DNA) sequence, either due to…

Q: Describe the role of mismatch repair (MMR) in DNA repair. Why can mutations in MMR increase the risk…

A: Mismatch repair of DNA is a repair system that removes and repairs erroneous insertions,…

Q: Cells exposed to ultraviolet light develop thymine dimers. Some organisms use visible light to…

A: When there is prolonged exposure to UV light, the DNA sequence forms the thymidine dimer, which…

Q: DNA repair processes use the old DNA strand as the template to repair mismatched bases on the newly…

A: The basis of evolution is mutation. Mutation is also the basis of natural selection. Considerable…

Q: During cellular checkpoints DNA Repair Proteins can edit and patch our DNA through many different…

A: Cell cycle is broadly categorized into 2 phases such as interphase and M phase. Interphase consists…

Q: During mismatch repair, why is it necessary to distinguish betweenthe template strand and the newly…

A: Mismatch repair (MMR) is a significant system of repairing deoxyribonucleic acid (DNA) errors in all…

Q: DNA ligase has the ability to relax supercoiled circular DNA in the presence of AMP but not in its…

A: (a). The DNA supercoiling is the manifestation of a structural strain in the DNA by a twisting of…

Q: In mismatch repair, how does the cell "know" which strand is the correct strand and which strand is…

A: During DNA synthesis,  DNA polymerases keep checking their work and keep fixing the majority of…

Q: Which of the following distinguishes direct repair from other repair mechanisms?

A: The answer is 'Direct repair reverses a structural abnormality without breaking the phosphodiester…

Q: Shown is a representation of a DNA molecule being transcribed.(a) Identify every 3′ end and every 5′…

A: Transcription is the process in which the codes in DNA are transcribed to mRNA. This helps to…

Q: What type of mutation is shown in the diagram?   Why do you think this type of mutation is referred…

A: Mutations are alterations in the gene sequence due to presence or interference of certain mutagenic…

Q: Why would a cell use SOS repair, considering that it introduces mutations?

A: The DNA repair process corrects the incorrectly paired nucleotides during the replication phase. Our…

Q: Match the bold DNA repair response(s) to the triggering type of DNA damage. Homologous…

A: Homologous Recombination: Double-Strand Break repair mechanism which is an accurate repair mechanism…

Q: Which repair pathway recognizes DNA damage duringtranscription? What happens if the damage is…

A: A gene is the essential physical and functional unit of heredity. They are comprised of DNA…

Q: Describe how homology-directed repair can repair a collapsed replication fork.

A: Homologous recombination is a DNA (deoxyribonucleic acid) repair mechanism, which ensures the…

Q: DNA mismatch repair enzymes preferentially repair bases on the newly synthesized DNA strand, using…

A: DNA mismatch repair enzymes play an important role in maintaining the accuracy of DNA replication.…

Q: Explain why the absorption of UV light by double-stranded DNA increases (the hyperchromic effect)…

A: Hyperchromicity is the effect of the increase in the absorbance of the molecule.

Q: Hereditary nonpolyposis colon cancer (HNPCC) is caused by mutations in proteins from one of the DNA…

A: HNPCC is an autosomal dominant inheritance that causes colon cancer in humans. this mutation is…

Q: Explain how methyl-directed mismatch repair candistinguish which strand to repair when…

A: Before the methyl-directed mismatched repair, proofreading is also done by enzyme DNA polymerases.…

Q: Which of the following types of DNA damage would be hardest to repair using the DNA repair pathways?…

A: DNA damage refers to any type of alteration or modification caused in the DNA. It can be caused due…

Q: Which of the following DNA répair pröčēsses is khowh to Be (1.e. Iing Mark all the answers that are…

A: The SOS response was the first DNA repair system described in Escherichia coli induced upon…

Tissue regeneration & repair

Tissue regeneration involves the restoration of tissue components by regrowth of damaged tissues. In contrast, tissue repair involves patching of injured tissue rather than restoring it. It is the proliferative capacity of the cells that decides the amount of regeneration against the repair that would occur in the tissue. Both regeneration and repair depending on the duration of the injury and response to the inflammation.