19. For the helix in double-stranded B-form DNA, the majority of the stability of the DNA can be attributed to: A. base-pairing interactions via H-bonds. B. interactions along the phosphate backbone. C. base-stacking interactions via van-der-Waals interactions. D. covalent bonds between adjacent bases in one strand. E. ionic interactions with metal ions.

19. For the helix in double-stranded B-form DNA, the majority of the stability of the DNA can be attributed to: A. base-pairing interactions via H-bonds. B. interactions along the phosphate backbone. C. base-stacking interactions via van-der-Waals interactions. D. covalent bonds between adjacent bases in one strand. E. ionic interactions with metal ions.

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 12QP: DNA contains many hydrogen bonds. Are hydrogen bonds stronger or weaker than covalent bonds? What...

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1. When DNA replicates, how is it able to “unwind” its double helix? 2. Instead of the term “Formation of a nucleoside”, what could the name of the reaction be? What functional group is being formed? 3. Define the primary structure of DNA/RNA. Compare and contrast to the primary structure of proteins.
Indicate whether each of the following statements about the double-helix secondary structure of DNA is true or false. a. The two polynucleotide strands are complementary rather than identical. b. Bases present extend outward from the double helix. c. Covalent bonding occurs between the two polynucleotide strands. d. The two polynucleotide strands run in the 5′-to-3′ direction
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DNA contains many hydrogen bonds. Are hydrogen bonds stronger or weaker than covalent bonds? What are the consequences of this difference in strength?
The best definition of an endonuclease is that it hydrolyzes A. nucleotide from only the 3' -end of an oligonucleotide . B. nucleotide from either terminal of an oligonucleotide. C. phosphodiester bond located in the interior of a polynucleotide . D. bond only in a specific sequence of nucleotides. E. bond that is distal co the base chat occupies the 5' position of the bond
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