The validation of the given statement that the hydrogen bonding occurs between the two polynucleotide strands has to be stated. Concept introduction: A DNA is a nucleotide polymer which is composed deoxyribose sugar, a phosphate group, and one of the nitrogenous bases adenine, cytosine, guanine, or thymine.
The validation of the given statement that the hydrogen bonding occurs between the two polynucleotide strands has to be stated. Concept introduction: A DNA is a nucleotide polymer which is composed deoxyribose sugar, a phosphate group, and one of the nitrogenous bases adenine, cytosine, guanine, or thymine.
Solution Summary: The author explains that DNA is composed of deoxyribose sugar, a phosphate group, and one of the nitrogenous bases
Definition Definition A complex molecule that makes up a fundamental unit of a DNA or RNA molecule. Nucleotides are composed of a sugar, a nitrogenous base, and a phosphoric acid.
Chapter 11, Problem 11.42EP
(a)
Interpretation Introduction
Interpretation: The validation of the given statement that the hydrogen bonding occurs between the two polynucleotide strands has to be stated.
Concept introduction: A DNA is a nucleotidepolymer which is composed deoxyribose sugar, a phosphate group, and one of the nitrogenous bases adenine, cytosine, guanine, or thymine.
(b)
Interpretation Introduction
Interpretation: The validation of the given statement that the DNA bases present inward towards the interior of the double helix has to be stated.
Concept introduction: A DNA is a nucleotide polymer which is composed deoxyribose sugar, a phosphate group, and one of the nitrogenous bases adenine, cytosine, guanine, or thymine.
(c)
Interpretation Introduction
Interpretation: The validation of the given statement that the two polynucleotide strands run in opposite directions (5' to 3') and (3' to 5') has to be stated.
Concept introduction: A DNA is a nucleotide polymer which is composed deoxyribose sugar, a phosphate group, and one of the nitrogenous bases adenine, cytosine, guanine, or thymine.
(d)
Interpretation Introduction
Interpretation: The validation of the given statement that the two polynucleotide strands are identical has to be stated.
Concept introduction: A DNA is a nucleotide polymer which is composed deoxyribose sugar, a phosphate group, and one of the nitrogenous bases adenine, cytosine, guanine, or thymine.
CHEM2323
Problem 2-24
Tt O
e:
ל
Predict the product(s) of the following acid/base reactions. Draw curved arrows to show the formation and
breaking of bonds. If the bonds needed are not drawn out, you should redraw them.
+ BF3
(a)
(b)
HI +
(c)
OH
-BF
Problem 2-25
Use curved arrows and a proton (H+) to draw the protonated form of the following Lewis bases. Before
starting, add all missing lone pairs.
(a)
(b)
:0:
(c)
N
1
CHEM2323
PS CH02
Name:
CHEM2323
Problem 2-26
Tt O
PS CH02
Name:
Use the curved-arrow formalism to show how the electrons flow in the resonance form on the left to give the
one on the right. (Draw all lone pairs first)
(a)
NH2
NH2
+
(b)
Problem 2-27
Double bonds can also act like Lewis bases, sharing their electrons with Lewis acids. Use curved arrows to
show how each of the following double bonds will react with H-Cl and draw the resulting carbocation.
(a)
H2C=CH2
(b)
(c)
Problem 2-28
Identify the most electronegative element in each of the following molecules:
(a) CH2FCI
F
Problem 2-29
(b) FCH2CH2CH2Br
(c) HOCH2CH2NH2
(d) CH3OCH2Li
F
0
0
Use the electronegativity table in Figure 2.3 to predict which bond in the following pairs is more polar and
indicate the direction of bond polarity for each compound.
(a) H3C-Cl or Cl-CI
(b) H3C-H or H-CI
(c) HO-CH3 or (CH3)3Si-CH3
(d) H3C-Li or Li-OH
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