Whether the C-A base pair is complementary base pair in DNA molecules has to be stated. Concept introduction: In DNA double helix base pairs are bonded together by hydrogen bonds. In DNA, purine (adenine and guanine) base pairs bond with pyrimidines (cytosine and thymine).
Whether the C-A base pair is complementary base pair in DNA molecules has to be stated. Concept introduction: In DNA double helix base pairs are bonded together by hydrogen bonds. In DNA, purine (adenine and guanine) base pairs bond with pyrimidines (cytosine and thymine).
Solution Summary: The author explains that DNA double helix base pairs are bonded together by hydrogen bonds. In DNA molecules, A–T and G–C pairings are most favorable for hydrogen bonding
Interpretation: Whether the C-A base pair is complementary base pair in DNA molecules has to be stated.
Concept introduction: In DNA double helix base pairs are bonded together by hydrogen bonds. In DNA, purine (adenine and guanine) base pairs bond with pyrimidines (cytosine and thymine).
(b)
Interpretation Introduction
Interpretation: Whether the C-C base pair is complementary base pair in DNA molecules has to be stated.
Concept introduction: In DNA double helix base pairs are bonded together by hydrogen bonds. In DNA, purine (adenine and guanine) base pairs bond with pyrimidines (cytosine and thymine).
(c)
Interpretation Introduction
Interpretation: Whether the C-G base pair is complementary base pair in DNA molecules has to be stated.
Concept introduction: In DNA double helix base pairs are bonded together by hydrogen bonds. In DNA, purine (adenine and guanine) base pairs bond with pyrimidines (cytosine and thymine).
(d)
Interpretation Introduction
Interpretation: Whether the G-A base pair is complementary base pair in DNA molecules has to be stated.
Concept introduction: In DNA double helix base pairs are bonded together by hydrogen bonds. In DNA, purine (adenine and guanine) base pairs bond with pyrimidines (cytosine and thymine).
How many signals do you expect in the H NMR spectrum for this molecule?
Br Br
Write the answer below.
Also, in each of the drawing areas below is a copy of the molecule, with Hs shown. In each copy, one of the H atoms is colored red. Highlight in red all other H
atoms that would contribute to the same signal as the H already highlighted red
Note for advanced students: In this question, any multiplet is counted as one signal.
1
Number of signals in the 'H NMR spectrum.
For the molecule in the top drawing area, highlight in red any other H atoms that will contribute to
the same signal as the H atom already highlighted red.
If no other H atoms will contribute, check the box at right.
Check
For the molecule in the bottom drawing area, highlight in red any other H atoms that will contribute
to the same signal as the H atom already highlighted red.
If no other H atoms will contribute, check the box at right.
O
✓
No additional Hs to color in top
molecule
ง
No additional Hs to color in bottom…
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