Enzyme function is critically important for the proper replication of DNA. Predict the consequence of a loss of function for each of the following enzymes. a. DNA gyrase b. DNA polymerase III c. DNA ligase d. DNA polymerase I

Q: what are some examples where DNA polymerase is not functional and translesion DNA synthesis has to…

A: Dna polymerase are the enzyme that helps in DNA synthesis. It has the ability to synthesize the DNA…

Q: The enzyme responsible for adding new nucleotides to a growing DNA chain during DNA replication is…

A: DNA is the nucleic acid that stores genetic information.

Q: Replication of DNA produces two daughter DNA molecules in which a. one daughter molecule contains…

A: Cell division is an important process that results in the formation of multiple cells from a single…

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: 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: DNA synthesis has a very low error rate.  One reason for this is that the DNA polymerase enzyme can…

A: DNA polymerase is the enzyme that does maximum of the work throughout DNA replication. It builds a…

Q: Avery, MacLeod, and McCarty demonstrated that the transforming principle can be destroyed by DNase.…

A: Introduction: DNA stands for 'deoxyribonucleic acid' and it is the hereditary material in humans and…

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: Which of the following processes require DNA ligase?

A: The genetic engineering is the process that uses several enzymes and mechanism to make organisms…

Q: The enzyme that proofreads the new strand of DNA, looking for and correcting mistakes as it…

A: DNA replication is the process in which the two identical replicas of DNA from one original DNA…

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

A: The double stranded DNA, as the name suggests has two strands while the denatured DNA contains just…

Q: DNA replication AND repair both finish with the action of Primase DNA polymerase l DNA polymerase II…

A: Primase- Primase is an enzyme that produces primers, which are short RNA sequences. Primase works by…

Q: Which Strict Operating Requirements DNA Polymerase Has?

A: DNA polymerase is an enzyme involved in the synthesis of nucleotides. These are important for the…

Q: Describe and diagram the DNA damage done by UV radiation on a single strand of DNA. Describe in at…

A: The DNA molecules that encode its genome in human cells DNA damage is subdivided into two types:…

Q: Match the following polymerases with their function. + DNA Polymerase III DNA polymerase I + RNA…

A: Polymerase : There are a set of enzymes specific for DNA & RNA mainly responsible for…

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: Type of DNA spontaneous mutation that can explain why uracil is not found in DNA a.depurination…

A: DNA is a double helix structure which is composed of bases - adenine, thymine, cytosine and guanine.…

Q: Indicate whether each of the following statements relating to aspects of DNA replication is true or…

A: Replication of DNA is characterized as the duplication process of the DNA helix and happens at…

Q: Explain how the lagging dna strand is copied during dna replication? What are the enzymes involved?

A: The nascent deoxyribonucleic acid (DNA) consists of one leading strand and one lagging strand.

Q: explain the laws of DNA polymerase? Why are they important and are all the laws required for DNA…

A: DNA polymerase is the enzyme that is helpful in catalysing the DNA molecules synthesis. There are…

Q: Describe an experimental approach to determining the processivity of a DNA polymerase (that is, the…

A: The processivity is defined as the degree of the addition of an average number of nucleotides prior…

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: One common feature of all DNA polymerases is that they a. synthesize DNA in the 3′-to-5′…

A: One common feature of all DNA polymerases is that they synthesize DNA in the 5'-3' direction.

Q: During high stress environments, it has been found that some bacteria activate a genetic mechanism…

A: The given enzymes are used in the replication process. It is a process wherein the genetic material,…

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: DNA glycosylase inhibitors are used to study which DNA repair mechanism?

A: DNA glycosylase inhibitors are used to which DNA repair mechanism?

Q: A mutation results in the presence of multiple DNA fragments on the newly synthesized DNA strand…

A: DNA is a double helical structure made of two complimentary strands. The two strands in a double…

Q: The following statements are correct EXCEPT: A) Information in the DNA is transcribed int mRNA and…

A: DNA is a genetic material which is safely stored inside the nucleus of the cell . It is ladder like…

Q: What is the difference between DNA polymerase and RNA polymerase?

A: Enzymes are essentially proteins that aides in catalyzing diverse biological activities. A…

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: Discuss the following statement: “the DNA repair enzymes that fix deamination and depurination…

A: DNA is made up of two connected strands which loop about each other like a helix structure, giving…

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: The statement “DNA replicates by a semiconservative mechanism” means that (a) only one DNA strand is…

A: Introduction  DNA replication is a semi-conservative and semi-autonomous process. Semi-autonomous…

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: Base analogs are mutagenic because of which characteristic? a. They produce changes in DNA…

A: Mutagens are physical, chemical, or biological agent that induces mutation by changing the gene…

Q: Is there any situation in which DNA is made based on a RNA template? If there is, explain with an…

A: DNA is the double helix, which exhibits nucleotide sequences. These are replicated by the daughter…

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: In each case, state if you agree and provide a reason for your answer.      i)  DNA primase ii)  DNA…

A: Mutation is the sudden change in the nucleotide base sequence of DNA and can result due to the…

Q: Describe the denaturation of DNA including the factors that can affect it and the kind of forces…

A: Denaturation is the process of loss of the native structure by applying some external denaturing…

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: Explain semi-conservative modelmof DNA replication b) discuss initiation in DNA replication and…

A: DNA replication is the process in which the copies of DNA is made by the action of several enzymes…

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

A: Solution : correct option is C

Q: If a prokaryotic cell experienced a mutation that eliminated DNA polymerase's 3' to 5' exonuclease…

A: DNA replication is a process in which DNA is synthesized in a semi-conservative manner. The enzyme…

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.