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

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

A: DNA mismatch repair is a system for recognizing and repairing erroneous insertion, deletion, and…

Q: Which of the following statements are correct about telomeres (select all that apply)? A. A total of…

A: Cancer is a broad cluster of diseases that is distinguished by the uncontrolled proliferation and…

Q: Enzymes necessary to repair and insert DNA into plasmid are: (Circle all necessary enzymes) a. Human…

A: A plasmid is a small,circular, double-stranded DNA molecule that is separate from the chromosomal…

Q: The BRCA genes produce DNA repair proteins. Genetic testing is available that can determine if a…

A: BRCA1 (BReast CAncer gene 1) and BRCA2 (BReast CAncer gene 2) are proteins that aid in the repair of…

Q: Please explain one type of “DNA repair” mechanism (what is it, when is it used, how does it work).

A: The process by which a cell detects and repairs damage to the DNA molecules that encode its genome…

Q: Based on its molecular structure what would you expect to be the biological mechanism of the…

A: Anticancer drugs are those that can treat malignant diseases. There are several kinds of anticancer…

Q: Double-strand breaks can be repaired bya. homologous recombination repair (HRR).b. nonhomologous end…

A: DNA (deoxyribonucleic acid) is the hereditary or genetic material present in most of the living…

Q: Which of the following would be most likely to cause a mutation? A. the addition of nucleotides to…

A: DNA( deoxyribonucleic acid) is the double-stranded molecule that is the genetic material in most…

Q: Which of the following is NOT correct regarding DNA and RNA synthesis? Select one: a. The overall…

A: Replication is the process by which, DNA is copied. Where transcription is the process by which DNA…

Q: Which of the following DNA repair systems may involve the removalof a segment of a DNA strand?a.…

A: Answer is b.)  Nucleotide excision repair.

Q: Strand invasion is often used to repair which of the following damages to DNA?   a. Single-strand…

A: Homologous recombination repair is the process of repairing double-strand breaks that occurs in both…

Q: Match the E. coli mismatch repair enzyme on the left with the appropriate function on the right.…

A: DNA mismatch repair (MMR) is a highly conserved biological pathway that plays a key role in…

Q: ) Base excision repair requires polymerases. B.) In DNA repair by excision, the non-damaged strand…

A: Solution : Correct option is d

Q: Compare and contrast the action of DNA damaging agents that lead to: 1. Point mutations . 2.…

A: 1. Point mutation... Point mutation is the single nucleotide mutation in DNA. In this mutation…

Q: The flask where you grow the E. coli culture got exposed to UV rays, explain what kind of DNA damage…

A: In order to maintain the integrity of information contained in DNA, it has various repair…

Q: Which of the following does not occur during telomerase extension of parental DNA? a. Translocation…

A: Introduction: Telomerase, an enzyme having   RNA template, extends its ends by copying the RNA…

Q: Would the cell likely experience an issue due to the incorrect function of the protein produced by…

A: DNA ( deoxyribonucleic and) is a genetic material in most of the organism that appear as two…

Q: In nucleotide excision repair in E. coli, the function of the UvrA/UvrB complex is toa. detect DNA…

A: Deoxyribonucleic acid (DNA) is a double-stranded molecule. DNA replication is the process by which…

Q: You are an expert in DNA-repair mechanisms. You receive a sample of a human cell line derived from…

A: In normal conditions, the cells are capable of fixing the damages caused to DNA before problems…

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: Answer the following question from the photo below with one paragraph each.

A: ORIGINAL DNA SEQUENCE:Template strand: 3' TCG TTA GGC AGA ACC 5'Coding strand: 5' AGC AAT CCG TCT…

Q: Which of the following molecules helps relieve the tension of unwinding parental DNA strands, by…

A: DNA replication is defined as a process by which a single DNA molecule will produce two identical…

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: Enzymes or proteins involved in DNA repair include a. RAD52 b. RuvA c. UvrA d. MAPK

A: DNA repair is considered as a process in which any kind of damages is eliminated out.

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: Cells exposed to ultraviolet light develop thymine dimersand visible light reverses this damage.…

A: Irradiation by the UV light causes pyrimidine dimers. The most common pyrimidine dimers formation is…

Q: A DNA probe with sequence TCAGGCTTCAG would bind most strongly to which of the following DNA…

A: Gene probes are small, single-stranded DNA or RNA that hybridize with the target DNA sequences in a…

Q: DNA damage by uv light creates pyrimidine dimers between adjacent pyrimidines on the same strand.…

A: DNA damage is defined as a change in the basic structure of DNA that is not itself replicated when…

Q: DNA Polymerase holoenzymes used for DNA replication recognizes   A. double-stranded sequences as…

A: DNA polymerase III holoenzyme (Pol III HE) is an enzyme that catalyzes elongation of DNA chains…

Q: While many commonly used antibiotics interfere with protein synthesis or cell wall formation,…

A: Aminocoumarin is a class of antibiotics that act by an inhibition of DNA gyrase enzyme involved in…

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: What kind of mutation normally has no consequence? please explain the answer a.transversions…

A: Any change in the DNA sequence is considered as mutation. It can be large chromosomal aberration or…

Q: Eukaryotes such as humans have linear chromosomes. In order to signal the end of DNA replication,…

A: Telomere is a stretch of repeating DNA sequences that is found at the end of each chromosome.…

Q: Which of the following is not a factor that increases mutations?   a. Fast rates of replication…

A: Mutations are alterations in the genetic sequence of germline cells or somatic cells that result in…

Q: Which one of the following statements is true?   a. Dideoxynucleotides signal the end of DNA…

A: DNA or deoxyribose nucleic acid is polynucleotide chain, which codes genetic information of…

Q: Spontaneous mutations can arise from a. all answers are correct b. DNA polymerase inserts an…

A: Spontaneous mutation is the mutation which naturally arise and which  is not due to exposure to…

Q: The action of ultraviolet radiation on DNA to induce mutation is the…

A: The DNA sequence is extremely important as it is used as template for replication and protein…

Q: Which of the following is the most likely effect of a mutation in the gene coding for a DNA repair…

A: Biological macromolecules are those large molecules that are necessary for the survival and growth…

Q: One of the mechanisms that leads to the DNA mutations is a process known as DNA polymerase slippage…

A: DNA slippage is a type of DNA strand misfiring mechanism that occurs in the repeated nitrogenous…

Q: Mismatch repair in E. coli distinguishes between old and new strands of DNA on the basis of a.…

A: Deoxy ribonucleic acid (DNA) is the genetic material of most organisms that carry coded genetic…

Q: Which of the following are strategies used by stem cells to reduce risk of alterations in their…

A: Introduction: Human stem cells are distinctive cells with the potential to distinguish into a wide…

Q: Eukaryotes such as humans have linear chromosomes. In order to signal the end of DNA replication,…

A: DNA replication is a process by which two identical copies of DNA are made. It is completed in 3…

Q: For each statement below indicate whether it is true or false: A. Strand discrimination during the…

A: A In eukaryotes, nicks (single-stranded breaks) that are unique to recently manufactured DNA are…

Q: Which type of mechanism best repairs thymidine dimers caused by exposure to UV light? a. Nucleotide…

A: INTRODUCTION Thymidine Dimers:  Cyclobutane thymine dimer, a photo lesson caused by sunlight's UV…

Q: 1. Photoreactivation destroys the covalent bond by using the light energy from the UV light source…

A: Photoreactivation is the mechanism of DNA repair. This is a light-dependent repair mechanism.  It…

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.