Answered: CHз O.....H-NH N-H.....N Sugar Sugar…

Chemistry

10th Edition

ISBN:9781305957404

Author:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste

Publisher:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste

Chapter1: Chemical Foundations

Section: Chapter Questions

Problem 1RQ: Define and explain the differences between the following terms. a. law and theory b. theory and...

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The DNA double helix at the atomic level
looks like a twisted ladder, where the “rungs” of the ladder
consist of molecules that are hydrogen-bonded together.
Sugar and phosphate groups make up the sides of the ladder.
Shown are the structures of the adenine–thymine (AT)
“base pair” and the guanine–cytosine (GC) base pair:

You can see that AT base pairs are held together by two
hydrogen bonds and the GC base pairs are held together
by three hydrogen bonds. Which base pair is more stable to
heating? Why?

CHз
O.....H-NH
N-H.....N
Sugar
Sugar
Thymine
Adenine
н
N-H……
N *H-N
=N
Sugar
O.....H-NH
*• •H–NH
Sugar
Cytosine
Guanine

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