Pyrimidine dimers in DNA may be repaired by in E. coli cells. (select all correct answers) Select one or more: O a. photolyase b. nucleotide excision repair O c. mis-match repair O d. methyl-transferase

Q: The linking of the 5’ end of one Okazaki fragment with the 3’ end of an adjacent Okazaki fragment…

A: The DNA is the genetic material that is passed from one generation to the next generation. It is…

Q: The original DNA base sequence is  5’-AGCGTTACCGT-3’; a mutation in the DNA strand results in the…

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

Q: Which type of mutation involves only one base pair? a. insertion b. deletion c. inversion d.…

A: A mutation occurs when DNA molecules are copied or replicated, resulting in DNA variants that can be…

Q: How many subunits does the E. coli DNA polymerase I have? Select one: O a. 5 Оb. 10 О с. 1 O d. 3

A: RNA polymerase is required for the transcription of DNA into RNA. It is also important in the study…

Q: . For each DNA repair process in column I, list all characteristics from col- umn II that correctly…

A: Deoxyribonucleic acid(DNA) is a molecule comprised of two polynucleotide chains coiled around each…

Q: The enzyme responsible for the joining of Okazaki fragments is a. helicase b. primase c. DNA ligase…

A: Okazaki fragments are DNA nucleotides with short sequences having approximately 150 to 200 bps (in…

Q: Is there any situation in which DNA is made based on a RNA template? What is the enzyme involved?

A: ANSWER;-  The cycle in which DNA is synthesized having as a layout an RNA chain is called reverse…

Q: During DNA replication, the Okazaki fragments are Select one: O a. single-strand RNA O b. RNA-DNA…

A: Option c

Q: Topoisomerases (a) synthesize DNA (b) synthesize RNA primers(c) join Okazaki fragments (d) break and…

A: The biochemical molecule that is built up with two polynucleotide chains is called DNA…

Q: Restriction enzymes found in bacterial cells are ordinarily useda. during DNA replication.b. to…

A: Introduction  Enzymes plays a vital role in controlling various cellular activities. There are…

Q: Which of the following represents a missense mutation in the DNA coding strand sequence, 5' -…

A: A change in the structure of DNA, known as a mutation, can alter the sequence of amino acids that…

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: 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: Match each enzyme name in the left column with the correct descriptive phrase in the right column.…

A: DNA replication is the biological process of producing two identical replicas of DNA from one…

Q: single DNA molecule contains two specific target sites separated by an intervening sequence. If…

A: *Here A single DNA molecule contains two specific target sites and they are separated by an…

Q: Which of the following is/are true regarding the enzyme primase?  a: primase functions during…

A: DNA replication occurring in all organisms is the process of producing identical copies of DNA from…

Q: What is the enzymatic function of restriction enzymes? Group of answer choices a. to cut nucleic…

A: Restriction enzymes are involved in accomplishing various biotechnological processes. Mostly found…

Q: The following enzymes cannot catalyze the synthesis of DNA A.DNA polymerase B.DNA gyrase…

A: DNA is the genetic material of an organism. DNA replication is a process in which two DNA molecules…

Q: Which enzyme is used in Sanger sequencing reactions? O A. DNA polymerase O B. S1 endonuclease O C.…

A: Introduction :- Sanger DNA sequencing is commonly employed in research to target smaller genomic…

Q: Describe the excision repair process in DNA, using the excision of thymine dimers as an example.

A: DNA (Deoxyribonucleic Acid)   It is defined as a genetic material which has all the stored genetic…

Q: Okazaki fragments are short DNA pieces that explain how the DNA polymerase can continue the…

A: * Okazaki fragment are short sequences of DNA nucleotides. * They are of approximately 150 to 200…

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: Which of the following statements applies to both point and frameshift mutations? A. A base is…

A: Answer- Mutation is any change in the sequence of the DNA by any mutagen. It brings changes to both…

Q: Which type of cells were used to extract the DNA that was sequenced? a. red blood cells c. white…

A: 1) Extraction of DNA is a very lengthy process; it can be extracted from any cell, either…

Q: The chromatogram shows fluorescent peak data from a dye-terminating nucleotide-sequencing reaction.…

A: Sanger sequencing (also known as chain termination sequencing) is a DNA sequencing technology that…

Q: Which of the following Is true of the leading strand? A it is synthesized discontinuously at the…

A: Leading strand is synthesized continuously and lagging strand is synthesized discontinuously. Both…

Q: Damaged DNA can be reversed if nucleotides can be replaced with a proper nucleotide for a correct…

A:

Q: Which mechanism requires the ability to distinguish between newly synthesized and template strands…

A: DNA is the double stranded structure in which genes are located. Usually it functions as genetic…

Q: Which enzyme can recognize an altered base in the DNA? Group of answer choices DNA Polymerase AP…

A: There are several DNA repair mechanisms are present that are- direct repair system, excision repair…

Q: SSBS are: A single-stranded bodies called Okazaki fragments. B substrates for DNA ligases. ©…

A: The biological information flows through genes. DNA is the main genetic material of most of living…

Q: Which of the following items do not affect the melting temperature of DNA? A length of the DNA B the…

A: Melting temperature ( Tm): half of DNA gets denatured (melts). Tm = 2* (A+T) + 4* (G+C)

Q: Which of the following is not a DNA repair mechanism?

A: DNA repair is a set of procedures through which a cell detects and repairs damage to the DNA…

Q: What repair system will have an issue functioning properly if DNA glycosylase loses its function?…

A: DNA repair is a process of repairing the spontaneous changes arising in the DNA. The genome…

Q: scientist uses a molecule of DNA composed of radioactive nucleotides as a template for replication…

A: DNA replication is the process of formation of exact duplicate copy of DNA. Transcription RNA is…

Q: Which of the following is NOT common to all repair mechanisms? A. Detection of the lesion B. Removal…

A: A change in the fundamental structure of DNA that is not reproduced when the DNA is replicated is…

Q: The initial mechanism for repairing nucleotide errors in DNA is ________. a. mismatch repair b. DNA…

A: The biochemical molecule that is built up with two polynucleotide chains is called DNA…

Q: The formation of pyrimidine dimers results from which of the following?  a. Spontaneous errors by…

A: Pyrimidine dimers cause mutations in the DNA. When two thymine residues in the same strand form…

Q: A.) Damaged DNA can be reversed if nucleotides can be replaced with a proper nucleotide for a…

A: DNA repair : The DNA molecule may undergo some alternations due to various factors like exposure to…

Q: The problem of synthesizing the lagging strand, in the sense that DNA synthesis can only occur in…

A: DNA synthesis is the formation of new DNA molecules from the parental strand by utilizing…

Q: Which of the following is not required for Sanger sequencing of DNA? OA. ddNTPs B. DNTPS C. A DNA…

A: Sanger sequencing is a method of DNA sequencing.It involves selective incorporation of chain…

Q: When a dideoxyribonucleotide is incorporated into a growingDNA strand,a. the strand elongates…

A: Given: Explain when a dideoxyribonucleotide is incorporated into a growing DNA strand, choose the…

Q: A. Changes and damages to the DNA is permanent and has no remedy. B. Damage to the DNA can be…

A: DNA or Deoxyribonucleic acid, is the hereditary material that composed of two polynucleotide chain…

Q: Defects in the excision  repair process may result in : A. Mutations B. Okazaki fragments C.…

A: Excision repair refers to a cellular mechanism in which the damaged DNA is repaired during the cell…

Q: Define the following terms: a. processivity b. replisome c. exonuclease d. DNA ligase e. replicon

A: DNA represents the genome of a variety of organisms and can exist in single-stranded or double…

Q: Which of the following statements describe reversal of DNA repair mechanism. A. UV light blocks the…

A: Solution : correct option is C

Q: Prokaryotes use methylation as a major mechanism of DNA protection because (A) methyl groups include…

A: Prokaryotic cells do not have a distinct nucleus but are situated within a cell, called the…

Q: A mutant DNA strand was transcribed then translated to proteins. a. What is the protein product of…

A: A mutation is an abnormal change in DNA sequences that alters the protein product and is one of the…

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.