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.

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.

Human Heredity: Principles and Issues (MindTap Course List)

11th Edition

ISBN:9781305251052

Author:Michael Cummings

Publisher:Michael Cummings

Chapter8: The Structure, Replication, And Chromosomal Organization Of Dna

Section: Chapter Questions

Problem 20QP: What is the function of DNA polymerase? a. It degrades DNA in cells. b. It adds RNA nucleotides to a...

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How does DNA replication occur in a precise manner to ensure that identical genetic information is put into the new chromatid? See Figures 8.12 and 8.13. FIGURE 8.12 In DNA replication, the two polynucleotide strands uncoil, and each is a template for synthesizing a new strand. A replicated DNA molecule contains one new strand and one old strand. This mechanism is called semiconservative replication. FIGURE 8.13 A close-up look at the process of DNA replication. (a) As the strands uncoil, bases are added to the newly synthesized strand by complementary base pairing with bases in the template strand. The new bases are linked together by DNA polymerase. (b) DNA synthesis can proceed only in the 5 3 direction; newly synthesized DNA on one template strand is made in short segments and linked together by the enzyme DNA ligase.
What is the function of DNA polymerase? a. It degrades DNA in cells. b. It adds RNA nucleotides to a new strand. c. It coils DNA around histones to form chromosomes. d. It adds DNA nucleotides to a replicating strand. e. None of these.
Which of the following statements BEST describes the process of DNA Replication? Group of answer choices The two strands of the parental molecule separate and serves as template for synthesis of a new strand. Each new strand is identical to its template strand. Each strand of both daughter molecules contains a mixture of old and newly synthesized DNA. The two parental strands reassociate after acting as templates for new strands restoring the parental double helix.
Which of the following steps in DNA replication would occur second? 1.DNA molecule separates into two template strands.2.Complimentary nucleotides are added to each template strand.3.DNA molecule unwinds.4.Two DNA molecules, each with a template strand and a new strand, are formed.
In what order does initiation of DNA replication proceed (from 1 = first to 4 = last)? DNA polymerase adds nucleotides DNA unwinds at the origin of replication Primase synthesizes RNA primers Helicase opens up replication forks, which extend in both directions
Which of the following most correctly describes a process that occurs during DNA replication? Group of answer choices Replication of the lagging strand occurs in the 5' → 3' direction—the leading strand in the 3' → 5' direction. Replication is continuous on the lagging strand and discontinuous on the leading strand. Okazaki fragments are DNA fragments synthesized on the lagging strand. DNA polymerase adds dNTP monomers in the 3′–5′ direction. Replication is continuous on the lagging strand and discontinuous on the leading strand.
Which of the following replication proteins is incorrectly paired with it’s function? DNA polymerase - adds nucleotides to the growing strand Single stranded binding proteins - hold the DNA strands apart while they are being replicated Ligase - enhances separation of DNA strands Topoisomerase - relieves torsional stress due to unwinding by the DNA Primase - synthesizes a short RNA sequence to initiate replication
Which of the following statements are TRUE?I. DNA replication is a semiconservative process wherein the two resulting double helices consist of one new strand and one parental strand.II. The DNA strand that is used to make a complementary daughter strand is called the parental strand.III. The precursor of each new nucleotide in the DNA strand is a deoxynucleoside 3′-triphosphate.IV. The incoming nucleotide always attaches to 5′-phosphate of the previously added nucleotide
Which of the following statements are TRUE?I. DNA replication is a semiconservative process wherein the two resulting double helices consist of one new strand and one parental strand.II. The DNA strand that is used to make a complementary daughter strand is called the parental strand.III. The precursor of each new nucleotide in the DNA strand is a deoxynucleoside 3′-triphosphate.IV. The incoming nucleotide always attaches to 5′-phosphate of the previously added nucleotide a. I only b. II only c. I and IV d. III and IV
DNA replication is said to be semiconservative because ___ Synthesis can proceed uninterrupted (as a leading strand) in only one direction Each new DNA strand contains one parent strand and one new strand After each round of DNA replication, the original DNA strands joins None of the above
Which of the following is not a feature of eukaryotic DNA replication? a. Replication bubbles move in opposite directions.b. A new strand is synthesized using an old one as a template.c. Complementary base pairing determines which nucleotides will be added to the new strand.d. Each chromosome has one origin of replication.
A new DNA strand elongates only in the 5' to 3' direction because _____. replication must progress toward the replication fork DNA polymerase begins adding nucleotides at the 5' end of the template DNA polymerase can add nucleotides only to the free 3' end the polarity of the DNA molecule prevents addition of nucleotides at the 3' end