Q: What is a mutation in DNA repair and recombination?
A: Introduction: DNA damage can happen in various different ways. Some of the damage if left…
Q: Why is Dna twisted ?
A: The abbreviation of DNA is deoxyribonucleic acid. It is a hereditary genetic material possessing the…
Q: During replication, Primase, DNA Polymerase I, and Ligase are used most frequently on
A: Answer Option D - The lagging strand
Q: What are the functions of the gyrase, primase, and ligase enzymes in DNA replication?
A: Introduction: DNA replication is a process by which two identical DNA molecules are produced from…
Q: Why DNA repair systems is important ?
A: DNA is the genetic material that carries information from parents to offsprings. DNA in a cell can…
Q: Which of the following enzymes do not require a DNA template for nucleotide synthesis? *
A: DNA template is a DNA strand which is copied in to a complementary strand of DNA. According to the…
Q: How many replication forks are formed at the origin of replication?
A: The two strands of DNA separate to form two single strands that act as templates for the process of…
Q: What is the function of DNA topoisomerases?
A: In prokaryotes, replication process requires three types of DNA polymerases (DNA polymerase I, II,…
Q: What are the properties of DNA ligase?
A: DNA or deoxyribonucleic acid is a polynucleotide, which is mostly double stranded and forms genetic…
Q: What does DNA transformation refer to?
A: Genetic material passes on from parents to offspring along with the information loaded in the form…
Q: How is DNA synthesis in the Polymerase Chain reaction similar to, or different from, DNA synthesis…
A: DNA replication is a process that takes place in every biological cell. It involves the copying and…
Q: What is a DNA polymerase? What does it do or what is it involved in?
A: Deoxyribonucleic acid (DNA) is a self-replicating material present in almost all living organisms…
Q: explain DNA Repair Mechanisms?
A: DNA (Deoxyribonucleic acid) is the genetic material. It is a double-stranded helical structure, the…
Q: How does DNase prevent transformation?
A: A DNase is an enzyme that catalyzes the hydrolytic cleavage of phosphodiester linkages in the DNA…
Q: . Why is DNA synthesis continuous on one strand and discontinuous on the opposite strand?
A: DNA replication is the biological process by which DNA synthesis two identical replicas of itself…
Q: Why does dna polymerase only extend previously existing nucleotides
A: DNA polymerase is an enzyme that synthesizes DNA molecules from deoxyribonucleotides.
Q: what does DNA polymerase requires?
A: DNA is the genetic material in most living organisms. It is the information hub of the cell that…
Q: Some bacteria possess antibiotic resistance, as well as the ability to survive through adverse…
A: Bacteria They are small prokaryotic organisms with cell wall except some. Bacteria are both useful…
Q: The action of ultraviolet radiation on DNA to induce mutation is the
A: A mutation is a change in a DNA sequence. It can result from DNA copying mistakes made during cell…
Q: What is the role of TOPOISOMERASES in DNA replication?
A: Topoisomerases (also called polymer topoisomerases) are enzymes that facilitate to wind or unwind…
Q: How DNA polymerase is confined ?
A: Replication DNA Replication is a biological process that occurs in all living organisms and copies…
Q: What is DNA ligase?
A: DNA ligase is a specific type of enzyme , a ligase that facilitates the joining of DNA strands…
Q: DNA glycosylase inhibitors are used to study which DNA repair mechanism?
A: DNA glycosylase inhibitors are used to which DNA repair mechanism?
Q: Why is DNA denaturation important?
A: DNA denaturation aka melting is the separation of the double strands of the DNA into 2 individual…
Q: Define and indicate the significance of DNA ligase
A: DNA ligase is an enzyme that can join two strands of DNA. It creates a phosphodiester bond between…
Q: How many DNA repair mechanisms are there?
A: The genetic information of a cell is preserved through a variety of techniques. DNA repair is…
Q: . Indicate the role of each of the following in DNA replication: (a) topoisomerase, (b) helicase,…
A: The deoxyribonucleic acid (DNA) is a hereditary material that is found in almost all living…
Q: Which of the DNA strands is used in transcription?
A: Step 1 Transcription is the formation of RNA (ribonucleic acid) over the template DNA. It generates…
Q: Why does DNA replication produce two daughter strands that are identical to each other and to the…
A: DNA replication occurs in S phase. DNA replication occurs in 5’ to 3’ direction. DNA replication…
Q: Why is primase needed for DNA replication?
A: Deoxy ribonucleic acid (DNA) is the genetic material of most organisms that carry coded genetic…
Q: Why are primers required in DNA replication but not in transcription?
A: A gene is a DNA-based functional heredity unit that delivers instructions for the production of RNA…
Q: What is the difference in the requirement for a primer in RNA transcription compared to DNA…
A: DNA replication is the biological process of producing two identical replicas of DNA from one…
Q: In the DNA extraction. What is the role of alcohol in the DNA extraction process?
A: DNA extraction involves collecting all the DNA from a cell. For that, we first prepare the cells…
Q: Which statement is TRUE regarding the DNA ligase mechanism?
A: DNA ligases DNA ligases are the enzymes that are responsible for joining the two strands of DNA by…
Q: Does DNA replication follow the conservative,semiconservative, or dispersive model?
A: DNA or Deoxyribonucleic acid is a two-stranded double helix molecule which has to be perfectly…
Q: What mechanisms are used to repair DNA?
A: DNA undergoes the process of replication in order to form its copies. A mutation is a change that…
Q: Which of the following DNA repair processes is known to be "error-prone" (i.e. resulting in…
A: DNA repair is an assortment of cycles by which a cell distinguishes and rectifies harm to the DNA…
Q: What would be the effect on DNA synthesis if the telomerase enzyme were inactivated?
A: DNA replication is the process of producing two identical replicas of DNA from one original DNA…
Q: How do we know that DNA synthesis is discontinuous on one of the two template strands?
A: DNA replication refers to the process of making two identical copies of a DNA molecule. This…
Q: True or false: The synthesis of a new strand of DNA is initiated using a DNA primer?
A: Deoxyribonucleic acid (DNA) stores the cell’s genetic information and is present in the nucleus of…
Q: Why does the synthesis of one DNA strand lag behind the synthesis of the other strand?
A: DNA is the nucleic acids present in the organisms. DNA is the deoxy ribose nucleic acid in which…
Q: What is the role of RNA primer in DNA replication?
A: When a cell divides, the two new daughter cells must contain the same genetic information, as that…
Q: Is DNA fragmentation genetic?
A: Deoxy ribonucleic acid (DNA) is the genetic material of most organisms that carry coded genetic…
Q: In genetic transformation, what is meant by the wordcompetence?
A: The process of taking up naked or foreign deoxyribonucleic acid (DNA) from the environment is called…
Q: Why is it not surprising that the addition of nucleotides to a growing DNA chain takes place by…
A: DNA replication, or copying of a cell's DNA, is a complicated task. There are around 3 billion base…
Q: Which of the following is not part of the DNA backbone?
A: Deoxyribonucleic acid is a molecule with two long strands coiled around a common, imaginary, central…
Q: Why is DNA replication is considered a semi-discontinuous process? Explain in detail.
A: Biomolecules are organic molecules present in living organisms. There are mainly four biomolecules.…
Q: Why does DNA synthesis start with an RNA primer
A: By extending an RNA primer in the 5' to 3' direction, DNA polymerase begins to synthesise a new DNA…
Q: Why Is DNA Twisted?
A: Introduction: DNA is a double helix having a sugar-phosphate backbone like a ladder and the base…
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- Which of the following DNA Repair systems is most likely to be activated after someone goes to a tanning booth? Base Excision Repair Nucleotide Excision Repair Double Strand Break Repair ProofreadingWhich of the following DNA Repair systems is most likely to be activated after someone goes to a tanning booth? (Side Note from Professor Voll: Don't use tanning booths!) Base Excision Repair Double Strand Break Repair Proofreading Nucleotide Excision RepairAmong the different types of DNA repair, one has the unique ability to detect which strand is the newly synthesized strand where DNA polymerase may have mis-incorporated a base. This repair is Group of answer choices Photolyase Nucleotide excision repair Base excision repair SOS repair Mismatch Repair
- Which of the following DNA repair mechanisms involves the 3’ to 5’ exonuclease function of DNA polymerase? postreplication repair mismatch repair SOS response DNA proofreading base excision repairWhich of the following mechanisms will remove uracil and incorporate the correct base?a) Direct repairb) Base excision repairc) Mismatch repaird) Nucleotide excision repairWhich of the following repair mechanisms would most likely be used to repair a G in DNA damaged by oxidation? base excision DNA pol I proofreading mismatch repair nucleotide excision
- Which of the following DNA repair mechanisms relies on homologous DNA recombination for the repair process? base excision repair DNA proofreading postreplication repair mismatch repair SOS responseAll 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 repairEddie the E. coli bacterium cell is suspicious that his DNA contains a thymine dimer. What is the most probable DNA repair method that he will utilize to fix this damage? Group of answer choices Base excision repair Photo reactivation repair Nucleotide excision repair SOS response
- Which of the following DNA repair systems may involve the removalof a segment of a DNA strand?a. Base excision repairb. Nucleotide excision repairc. Mismatch repaird. All of the aboveAll of the following proteins function during nucleotide excision repair, EXCEPT: A. DNA pol B. Uvr A C. Uvr C D. Ligase E. GyraseWhich of the following DNA repair systems requires an involvement of the RecA protein? Mark all the correct answers Mismatch repair SOS response Photoreactivation repair DNA proofreading Postreplication repair