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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.

Biochemistry
Biochemistry
9th Edition
ISBN:9781319114671
Author:Lubert Stryer, Jeremy M. Berg, John L. Tymoczko, Gregory J. Gatto Jr.
Publisher:Lubert Stryer, Jeremy M. Berg, John L. Tymoczko, Gregory J. Gatto Jr.
Chapter1: Biochemistry: An Evolving Science
Section: Chapter Questions
Problem 1P
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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. 20. In living cells, nucleotides and their derivatives can serve as: A. carriers of metabolic energy. B. enzyme cofactors. C. intracellular signals. D. precursors for nucleic acid synthesis. E. all of the above.
Transcribed Image Text: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. 20. In living cells, nucleotides and their derivatives can serve as: A. carriers of metabolic energy. B. enzyme cofactors. C. intracellular signals. D. precursors for nucleic acid synthesis. E. all of the above.
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