World of Chemistry, Student Edition
for Alabama, 1st Edition by
National Geographic
Complete Chapter Solutions Manual
are included (Ch 1 to 21)
** Immediate Download
** Swift Response
** All Chapters included
,Table of Contents are given below
1.Chemistry: An Introduction
2.Matter
3.Measurements and Calculations
4.Chemical Foundations: Elements, Atoms, and Ions
5.Nomenclature
6.Chemical Composition
7.Chemical Reactions: An Introduction
8.Reactions in Aqueous Solution
9.Chemical Quantities
10.Energy
11.Modern Atomic Theory
12.Chemical Bonding
13.Gases
14.Liquids and Solids
15.Solutions
16.Acids and Bases
17.Equilibrium
18.Oxidation–Reduction Reactions and Electrochemistry
19.Radioactivity and Nuclear Energy
20.Organic Chemistry
21.Biochemistry
, Chapter 21 Biochemistry
1. Oxygen is the element present in the human body in the largest percentage by
mass (65%). Other elements present in the body and their uses are given in Table
21-1.
2. Proteins represent biopolymers of a-amino acids used for many purposes in the
human body (structure, enzymes, antibodies, etc.). Proteins make up about 15%
of the body by mass.
3. Molar masses of proteins range from a few thousand amu to over 1 million amu.
Such molar masses are consistent with proteins being large polymeric molecules.
4. Fibrous proteins provide the structural material of many tissues in the body, and
are the chief constituents of hair, cartilage, and muscles. Fibrous proteins consist
of lengthwise bundles of polypeptide chains (a fiber). Globular proteins have their
polypeptide chains folded into a basically spherical shape and tend to be found in
the bloodstream, where they transport and store various needed substances, act as
antibodies to fight infections, act as enzymes to catalyze cellular processes,
participate in the body's various regulatory systems, and so on.
5. The general structural formula for the a-amino acids is
All a-amino acids contain the carboxyl group (–COOH) and the amino group (–
NH2) attached to the a-carbon atom as indicated. In this general formula, R
represents the remainder of the amino acid molecule (side chain). It is this portion
of the molecule that differentiates one amino acid from another.
6. hydrophobic; hydrophilic
7. Since most proteins exist in aqueous media (water) in living creatures, the
presence of hydrophobic (water-fearing) and hydrophilic (water-loving) side
chains on the amino acids in a protein will greatly influence how that protein's
chain interacts with water. In particular, the three-dimensional structure of the
protein is greatly influenced by what types of side chains are present in its
constituent amino acids.
8. There are six tripeptides possible.
cys-ala-phe ala-cys-phe phe-ala-cys
cys-phe-ala ala-phe-cys phe-cys-ala
, Biochemistry
9. a. ile-ala-gly
b. gln-ser
c. ser-gln
d. cys-asn-gly
for Alabama, 1st Edition by
National Geographic
Complete Chapter Solutions Manual
are included (Ch 1 to 21)
** Immediate Download
** Swift Response
** All Chapters included
,Table of Contents are given below
1.Chemistry: An Introduction
2.Matter
3.Measurements and Calculations
4.Chemical Foundations: Elements, Atoms, and Ions
5.Nomenclature
6.Chemical Composition
7.Chemical Reactions: An Introduction
8.Reactions in Aqueous Solution
9.Chemical Quantities
10.Energy
11.Modern Atomic Theory
12.Chemical Bonding
13.Gases
14.Liquids and Solids
15.Solutions
16.Acids and Bases
17.Equilibrium
18.Oxidation–Reduction Reactions and Electrochemistry
19.Radioactivity and Nuclear Energy
20.Organic Chemistry
21.Biochemistry
, Chapter 21 Biochemistry
1. Oxygen is the element present in the human body in the largest percentage by
mass (65%). Other elements present in the body and their uses are given in Table
21-1.
2. Proteins represent biopolymers of a-amino acids used for many purposes in the
human body (structure, enzymes, antibodies, etc.). Proteins make up about 15%
of the body by mass.
3. Molar masses of proteins range from a few thousand amu to over 1 million amu.
Such molar masses are consistent with proteins being large polymeric molecules.
4. Fibrous proteins provide the structural material of many tissues in the body, and
are the chief constituents of hair, cartilage, and muscles. Fibrous proteins consist
of lengthwise bundles of polypeptide chains (a fiber). Globular proteins have their
polypeptide chains folded into a basically spherical shape and tend to be found in
the bloodstream, where they transport and store various needed substances, act as
antibodies to fight infections, act as enzymes to catalyze cellular processes,
participate in the body's various regulatory systems, and so on.
5. The general structural formula for the a-amino acids is
All a-amino acids contain the carboxyl group (–COOH) and the amino group (–
NH2) attached to the a-carbon atom as indicated. In this general formula, R
represents the remainder of the amino acid molecule (side chain). It is this portion
of the molecule that differentiates one amino acid from another.
6. hydrophobic; hydrophilic
7. Since most proteins exist in aqueous media (water) in living creatures, the
presence of hydrophobic (water-fearing) and hydrophilic (water-loving) side
chains on the amino acids in a protein will greatly influence how that protein's
chain interacts with water. In particular, the three-dimensional structure of the
protein is greatly influenced by what types of side chains are present in its
constituent amino acids.
8. There are six tripeptides possible.
cys-ala-phe ala-cys-phe phe-ala-cys
cys-phe-ala ala-phe-cys phe-cys-ala
, Biochemistry
9. a. ile-ala-gly
b. gln-ser
c. ser-gln
d. cys-asn-gly
