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Name: Between which types of compounds in a double-stranded DNA molecule mus
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Description: Between which types of compounds in a double-stranded DNA molecule must the bonds break before replication takes place? * a. phosphate – base b. sugar-phosphate c. adenine - thymine d. sugar – base

Science

Biology

Between which types of compounds in a double-stranded DNA molecule must the bonds break before replication takes place? *

BIOLOGY:CONCEPTS+APPL.(LOOSELEAF)

10th Edition

ISBN:9781305967359

Author:STARR

Publisher:STARR

Chapter8: Dna Structure And Function

Section: Chapter Questions

Problem 11SA: The phrase 5to3 refers to the _________ . a. timing of DNA replication b. directionality of DNA...

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What describes or designates the 3' end of a DNA strand? a. an available hydroxyl group on the 5th carbon of a deoxyribose of a terminal nucleotide b. an available phosphate group on the 3rd carbon of a deoxyribose of a terminal nucleotide c. an available hydroxyl group on the 3rd carbon of a deoxyribose of a terminal nucleotide d. an available hydroxyl group on the 2nd carbon of a deoxyribose of a terminal nucleotide
Which dna strand will be synthesized continuously during dna replication? a.The strand that is synthesized as Okazki Fragments b.the strand which is synthesized in the opposite direction compared to the direction of DNA unwinding? c.the strand which is sythesized in the same direction as the same direction of DNA unwinding? d.The m-RNA like strand e. The non-template strand
A new type of nucleic acid molecule is found have a base composition of 29% adenine, 19% thymine, 21% cytosine and 31% guanine. The molecule is probably: a. single stranded DNA b. double stranded RNA c. double stranded DNA d. single stranded RNA
When two adjacent bases in the same strand of DNA dimerize (form a covalent bond between them), what happens to the DNA? a. the original strand of DNA now contains a new DNA sequence b. the original strand of DNA is prevented from opening during replication, so this section of DNA will not be replicated c. the original strand of DNA is methylated, which causes the bases to mismatch d. the original strand of DNA is kinked, which prevents DNA polymerase from working properly e. the original strand of DNA is unaffected, so no additional mutations arise
Each time double-stranded (ds) DNA is replicated, the resulting copies of DNA include: A. One parent (original) strand and one daughter (new) strand B. Either two parent (original) strands or two daughter (new) strands C. Four parent strands D. Four daughter strands
What is the basis for the difference in how the leading and lagging strands of DNA molecules are synthesized? a. The origins of replication occur only at 5'end b. Helicases and single-strand binding proteins work at the 5'end c. DNA polymerase can join new nucleotides only to the 3' end of a pre-existing strand d. DNA ligase works only in the 3'-5' direction
Which statement best describes the structure of a DNA molecule A. DNA is single-stranded and straight molecule B. DNA is a double-stranded molecule that looks like a spiral staircase C. DNA is a double stranded molecule that is straight like a ladder D. DNA is a single-stranded and curly molecule
What is the major role of DNA polymerase in the DNA replication? a. Attached RNA primers to initiate the addition of complementary nucleotide sequence at the 5’ to 3’direction b. Adds up new complementary nucleotide sequence at the 3’ to 5’ direction of the DNA template. c. Unwinds the double helix by breaking the bonds at the 3’ to 5’ polymerization activity. d.It transiently cuts each strand to prevent supercoil at the 5’ to 3’ polymerization activity complementary to the RNA strand
Discontinuous replication is a result of which property of DNA? a. Complementary bases b. Charged phosphate group c. Antiparallel nucleotide strands d. Five-carbon sugar
During DNA replication, what is the very first process to occur? a. synthesis of the lagging strand b. sealing of the nicks between short DNA sections c. synthesis of the leading strand d. identifying where to start or "initiate" replication e. unwinding of the parent DNA
Which molecule provides the energy for the assembly of new nucleotides into a DNA strand during DNA replication? a. ATP b. the nucleotide itself c. NADH d. primers e. DNA ligase
Enzymes can break down the DNA catalyze the hydrolysis of the covalent bonds that join nucleotides together. What would happen to DNA molecules treated with these enzymes? a. The two strands of the double helix would separate b. The phosphodiester linkages of the polynucleotide backbone would be broken. c. The pyrimidines would be separated from the deoxyribose sugar. d. All bases would be separated from the deoxyribose sugars.