The base sequence for initially synthesized RNA for the DNA template strand 5 ' ATAT 3 ' in 5 ' -to- 3 ' direction has to be predicted. Concept introduction: DNA strand contains a complementary base pairing between A-T and C-G. The complementary strands are antiparallel to each other. RNA molecule contains the similar base pairing but the base thymine is replaced by uracil.
The base sequence for initially synthesized RNA for the DNA template strand 5 ' ATAT 3 ' in 5 ' -to- 3 ' direction has to be predicted. Concept introduction: DNA strand contains a complementary base pairing between A-T and C-G. The complementary strands are antiparallel to each other. RNA molecule contains the similar base pairing but the base thymine is replaced by uracil.
Interpretation: The base sequence for initially synthesized RNA for the DNA template strand 5' ATAT 3' in 5'-to-3' direction has to be predicted.
Concept introduction: DNA strand contains a complementary base pairing between A-T and C-G. The complementary strands are antiparallel to each other. RNA molecule contains the similar base pairing but the base thymine is replaced by uracil.
(a)
Expert Solution
Answer to Problem 22.81EP
The base sequence for initially synthesized RNA for the DNA template strand 5' ATAT 3' in 5'-to-3' direction is 5' AUAU 3'.
Explanation of Solution
The given DNA template strand is 5' ATAT 3'. Its corresponding informational DNA strand is 3' TATA 5'. Reading the informational DNA strand in 5'-to-3' direction, it is 5' ATAT 3'. In RNA molecule, thymine is replaced by uracil. Therefore, the base coding for initially synthesized RNA is 5' AUAU 3'.
(b)
Interpretation Introduction
Interpretation: The base sequence for initially synthesized RNA for the DNA template strand 5' ACCC 3' in 5'-to-3' direction has to be predicted.
Concept introduction: DNA strand contains a complementary base pairing between A-T and C-G. The complementary strands are antiparallel to each other. RNA molecule contains the similar base pairing but the base thymine is replaced by uracil.
(b)
Expert Solution
Answer to Problem 22.81EP
The base sequence for initially synthesized RNA for the DNA template strand 5' ACCC 3' in 5'-to-3' direction is 5' GGGU 3'.
Explanation of Solution
The given DNA template strand is 5' ACCC 3'. Its corresponding informational DNA strand is 3' TGGG 5'. Reading the informational DNA strand in 5'-to-3' direction, it is 5' GGGT 3'. In RNA molecule, thymine is replaced by uracil. Therefore, the base coding for initially synthesized RNA is 5' GGGU 3'.
(c)
Interpretation Introduction
Interpretation: The base sequence for initially synthesized RNA for the DNA template strand 5' ATCG 3' in 5'-to-3' direction has to be predicted.
Concept introduction: DNA strand contains a complementary base pairing between A-T and C-G. The complementary strands are antiparallel to each other. RNA molecule contains the similar base pairing but the base thymine is replaced by uracil.
(c)
Expert Solution
Answer to Problem 22.81EP
The base sequence for initially synthesized RNA for the DNA template strand 5' ATCG 3' in 5'-to-3' direction is 5' CGAU 3'.
Explanation of Solution
The given DNA template strand is 5' ATCG 3'. Its corresponding informational DNA strand is 3' TAGC 5'. Reading the informational DNA strand in 5'-to-3' direction, it is 5' CGAT 3'. In RNA molecule, thymine is replaced by uracil. Therefore, the base coding for initially synthesized RNA is 5' CGAU 3'.
(d)
Interpretation Introduction
Interpretation: The base sequence for initially synthesized RNA for the DNA template strand 5' AAAA 3' in 5'-to-3' direction has to be predicted.
Concept introduction: DNA strand contains a complementary base pairing between A-T and C-G. The complementary strands are antiparallel to each other. RNA molecule contains the similar base pairing but the base thymine is replaced by uracil.
(d)
Expert Solution
Answer to Problem 22.81EP
The base sequence for initially synthesized RNA for the DNA template strand 5' AAAA 3' in 5'-to-3' direction is 5' UUUU 3'.
Explanation of Solution
The given DNA template strand is 5' AAAA 3'. Its corresponding informational DNA strand is 3' TTTT 5'. Reading the informational DNA strand in 5'-to-3' direction, it is 5' TTTT 3'. In RNA molecule, thymine is replaced by uracil. Therefore, the base coding for initially synthesized RNA is 5' UUUU 3'.
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Vid4Q2
Unanswered
☑
Provide IUPAC name of product in the reaction
below
A 3,4-dimethylcyclohexene
B 1,2-dimethylcyclohexane
C 1,2-dimethylcyclohexene
D 3,4-dimethylcyclohexane
H₂
Pd
5.
Use the MS data to answer the questions on the next page.
14.0
1.4
15.0
8.1
100-
MS-IW-5644
26.0
2.8
27.0
6.7
28.0
1.8
29.0
80
4.4
38.0
1.0
39.0
1.5
41.0
1.2
42.0
11.2
43.0
100.0
44.0
4.3
79.0
1.9
80.0
2.6
Relative Intensity
40
81.0
1.9
82.0
2.5
93.0
8.7
20-
95.0
8.2
121.0
2.0
123.0
2.0
136.0
11.8
0
138.0
11.5
20
40
8.
60
a.
Br
- 0
80
100
120
140
160
180
200
220
m/z
Identify the m/z of the base peak and molecular ion.
2
b.
Draw structures for each of the following fragments (include electrons and charges): 43.0, 93.0,
95.0, 136.0, and 138.0 m/z.
C.
Draw a reasonable a-fragmentation mechanism for the fragmentation of the molecular ion to
fragment 43.0 m/z. Be sure to include all electrons and formal charges.
6. Using the values provided in Appendix E of your lab manual, calculate the monoisotopic mass for the pyridinium
ion (CsH6N) and show your work.
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