DNA replication begins on a double helix at specific sites, called origins of replication where DNA polymerases make the covalent bonds between the nucleotides of a new DNA strand and replication then proceeds in both directions. Select one: True False
Q: Every DNA sequence that can serve as an origin of replication is found to contain a DNA strand that…
A: The DNA double helix is unwrapped at precise locations termed origins, where replication begins.…
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A:
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A:
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- Match the following descriptions with the enzymes involved in DNA replication. Adds an RNA primer to begin elongation Removes the RNA primer from the beginning of the newly constructed strands Splices lagging strand segments Cleaves the rung of the DNA double helix ladder Description: Answer Answer Answer Answer Enzyme: Helicase DNA Polymerase Primase DNA LigaseShown below is a double stranded DNA molecule.Replicate this DNA and show the products formed from this replication. In your answer, indicate which strands are the new daughter strands (mark with D and in a different color) and which strands are the already existing parent strands (mark with P as shown below). Label the 5’ and 3’ ends of all DNA. HINT: You should have 2 double-stranded DNA molecules after replication. P: 5’ CATAGGATTCCTACG 3’ P: 3’ GTATCCTAAGGATGC 5’DNA replication occurs by adding (Note: NTPS = nucleotide triphosphates; dNTPs = deoxynucleotide triphosphates) DNTPS to the 3' end of the template strand NTPS to the 3' end of the daughter strand DNTPS to the 3' end of the daughter strand DNTPS to the 5' end of the template strand NTPS to the 5' end of the daughter strand
- What is the difference between the leading strand and the lagging strand in DNA replication? There are different DNA polymerases involved in elongation of the leading strand and the lagging strand. The leading strand is synthesized continuously in the 5' → 3' direction, while the lagging strand is synthesized discontinuously in the 5' → 3' direction. The leading strand requires an RNA primer, whereas the lagging strand does not. The leading strand is synthesized in the 3' → 5' direction in a discontinuous fashion, while the lagging strand is synthesized in the 5' → 3' direction in a continuous fashion.Which of the following statements about DNA replication is FALSE? Select one: Unwinding of the DNA molecule occurs as hydrogen bonds break. The new strand of DNA is synthesized from 5’ to 3’ direction. Replication occurs as each base is paired with the same base. In eukaryotes, replication can occur at numerous replication bubbles, each with two forks.Two important proteins in DNA replication are (select two): Cdx2 Cdt2 Cdc6 Cdc6 Cdt1 Cdc5
- Why does DNA have a leading strand and a lagging strand during replication?Select the correct row below that fills in the following blanks to answer the question above.___1st___ has to attach the new free-floating nucleotides to the ___2nd___ of the newly formed strand. The two strands of a DNA molecule are antiparallel, so in order for the lagging strand to be formed in the same direction, it has to be done in Okazaki fragments going in a ___3rd___ direction. Select one: a. 1st 2nd 3rd DNA polymerase 3' end 5' to 3' b. 1st 2nd 3rd DNA polymerase 5' end 3' to 5' c. 1st 2nd 3rd DNA ligase 3' end 5' to 3' d. 1st 2nd 3rd DNA helicase 5' end 3' to 5'Match the enzymes involved in DNA replication with their function. Primase [ Choose ] [ Choose] Synthesizes short RNA segment to initiate new DNA strand Helicase Main enzyme that extends RNA primer by adding DNA nucleotides to it Stabilizes single-stranded DNA Relieves over-winding of DNA ahead of the replication fork Removes RNA primers preceding Okazaki fragment and replaces RNA nucleotides with DNA nucleotides Single-stranded binding proteins Unwinds DNA helix Synthesizes the ends of the linear chromosome Seals nicks between adjacent DNA segments DNA polymerase III [ Choose ] DNA polymerasel [ Choose ] DNA Ligase [ Choose ] Topoisomerase [ Choose ]Match each of the following terms with the one definition that best describes it. Any of the following: Uracil, Cytosine, Thymine, Adenine, Guanine ····· Closes "nicks" between DNA fragments, forming a covalent bond that joins the fragments together Lays down a short chain of nucleotides at the beginning of DNA replication Synthesizes mRNA from a DNA template Unwinds the DNA double helix during DNA replication Adds individual nucleotides to a growing DNA strand during DNA replication 1. RNA Polymerase 2. DNA Polymerase 3. Ligase 4. Primase 5. Helicase 6. Nitrogenous Base
- Describe how replication makes copies of DNA. Include the following: helicase polymerase primase and primer ligase leading strand lagging strand base pairing rule (a-t, c-g) nucelotide nucleus semiconservativeIf the sequence of one single strand of DNA is C-A-A-G-T-A-G-G-C-T, what is the sequence of the complementary strand? Describe the origin of each strand of the new double helices created after DNA replication. Why is DNA replication important to the growth and development of a multicellular organism? Place the following terms in the correct order from smallest to largest: Nucleosome, supercoils, coils, chromosome, DNA double helixUsing the following DNA sequence what would be the complementary DNA made during replication? TAC GCG TTA CGA ATC