,Contents
Chapter Introduction to Biochemistry 1
1
k
Chapter 2 Water 10
Chapter 3 Amino Acids andthe Primary Structures 27
of Proteins
k k
Chapter 4 Proteins: Three-Dimensional Structure and 46
kFunction
Chapter 5 Properties of Enzymes 65
Chapter 6 Mechanisms of Enzymes 85
Chapter 7 Coenzymes and Vitamins 104
Chapter 8 Carbohydrates 119
Chapter 9 Lipids and Membranes 137
Chapter Introduction to Metabolism 153
10
k
Chapter 11 Glycolysis 169
Chapter 12 Gluconeogenesis, The Pentose Phosphate Pathway,
and Glycogen Metabolism 185
Chapter 13 The Citric Acid Cycle 199
Chapter 14 Electron Transport and Oxidative 213
kPhosphorylation
Chapter Photosynthesis 227
15
k
Chapter 16 Lipid Metabolism 241
Chapter 17 Amino Acid Metabolism 256
Chapter 18 Nucleotide Metabolism 269
Chapter 19 Nucleic Acids 284
Chapter DNA Replication, Repair, and Recombination 300
20
k
Chapter 21 Transcription and RNA Processing 315
Chapter Protein Synthesis 330
22
k
Chapter 23 Recombinant DNA Technology 348
,Chapter 1 Introduction k to Biochemistry
1) Which elements account for more than 97% of the weight of most
organisms?
k
C, H, N, Mg, O, S
C, H, N, O, P, S
C, H, N
Fe, C, O, P
, H,
E) K+, Na+, k k Mg2+, k k Cl-
Answer: B
2) PPraogteeinR
s ef:inSecbtiioonlogi2cal
k k k membranes may be
A) porous.
B) attached to the membrane surface.
C) span the membrane.
D) All of the above
E) B and C only
Answer: D
Page Ref: Section 3
3) Which statement about cellulose is false?
A) It is the most abundant polysaccharide in nature.
B) Its monomers are joined by glycosidic bonds.
C) It is present in the stems of flowering plants.
D) The hydroxyl groups of neighboring cellulose molecules interact to form
strong, insoluble fibers.
k k
E) It is a branched polymer of glucose.
Answer: E
Page Ref: Section 3
1
, 4) When Keq of k k a reaction = k 1, then
A) thek forward reaction is faster than the reverse reaction.
B) thek reverse reaction is faster than the forward reaction.
C) thek forward and reverse reaction rate constants are equal.
D) more products are formed than reactants.
E) fewer products are formed than reactants.
Answer: C
Page Ref: Section 4
5) Which statement is true about a reaction with an equilibrium constant, Keq,
equal to 1000?
k k
A) The forward rate constant is 1000 times greater than the reverse rate
constant.
k
B) The forward rate constant is 3 times greater than reverse rate
constant.
k
C) The forward rate constant is 1000 times smaller than the reverse rate
constant.
k
D) The forward rate constant is 3 times smaller than the reverse rate
constant.
k
E) There is not enough information
k given to compare the forward and
reverse
k k rate constants.
Answer: A
Page Ref: Section 4
6) The study of the energy changes during metabolic reactions is called .
A) bioinformatics
B) metabodynamics
C) thermometrics
D) bioenergetics
E) biological heat dynamics
Answer: D
Page Ref: Section 4
7) A spontaneous chemical reaction always has a change.
A) positive Gibbʹs free energy
B) negative Gibbʹs free energy
C) positive enthalpy
D) negative enthalpy
E) positive entropy
2
Chapter Introduction to Biochemistry 1
1
k
Chapter 2 Water 10
Chapter 3 Amino Acids andthe Primary Structures 27
of Proteins
k k
Chapter 4 Proteins: Three-Dimensional Structure and 46
kFunction
Chapter 5 Properties of Enzymes 65
Chapter 6 Mechanisms of Enzymes 85
Chapter 7 Coenzymes and Vitamins 104
Chapter 8 Carbohydrates 119
Chapter 9 Lipids and Membranes 137
Chapter Introduction to Metabolism 153
10
k
Chapter 11 Glycolysis 169
Chapter 12 Gluconeogenesis, The Pentose Phosphate Pathway,
and Glycogen Metabolism 185
Chapter 13 The Citric Acid Cycle 199
Chapter 14 Electron Transport and Oxidative 213
kPhosphorylation
Chapter Photosynthesis 227
15
k
Chapter 16 Lipid Metabolism 241
Chapter 17 Amino Acid Metabolism 256
Chapter 18 Nucleotide Metabolism 269
Chapter 19 Nucleic Acids 284
Chapter DNA Replication, Repair, and Recombination 300
20
k
Chapter 21 Transcription and RNA Processing 315
Chapter Protein Synthesis 330
22
k
Chapter 23 Recombinant DNA Technology 348
,Chapter 1 Introduction k to Biochemistry
1) Which elements account for more than 97% of the weight of most
organisms?
k
C, H, N, Mg, O, S
C, H, N, O, P, S
C, H, N
Fe, C, O, P
, H,
E) K+, Na+, k k Mg2+, k k Cl-
Answer: B
2) PPraogteeinR
s ef:inSecbtiioonlogi2cal
k k k membranes may be
A) porous.
B) attached to the membrane surface.
C) span the membrane.
D) All of the above
E) B and C only
Answer: D
Page Ref: Section 3
3) Which statement about cellulose is false?
A) It is the most abundant polysaccharide in nature.
B) Its monomers are joined by glycosidic bonds.
C) It is present in the stems of flowering plants.
D) The hydroxyl groups of neighboring cellulose molecules interact to form
strong, insoluble fibers.
k k
E) It is a branched polymer of glucose.
Answer: E
Page Ref: Section 3
1
, 4) When Keq of k k a reaction = k 1, then
A) thek forward reaction is faster than the reverse reaction.
B) thek reverse reaction is faster than the forward reaction.
C) thek forward and reverse reaction rate constants are equal.
D) more products are formed than reactants.
E) fewer products are formed than reactants.
Answer: C
Page Ref: Section 4
5) Which statement is true about a reaction with an equilibrium constant, Keq,
equal to 1000?
k k
A) The forward rate constant is 1000 times greater than the reverse rate
constant.
k
B) The forward rate constant is 3 times greater than reverse rate
constant.
k
C) The forward rate constant is 1000 times smaller than the reverse rate
constant.
k
D) The forward rate constant is 3 times smaller than the reverse rate
constant.
k
E) There is not enough information
k given to compare the forward and
reverse
k k rate constants.
Answer: A
Page Ref: Section 4
6) The study of the energy changes during metabolic reactions is called .
A) bioinformatics
B) metabodynamics
C) thermometrics
D) bioenergetics
E) biological heat dynamics
Answer: D
Page Ref: Section 4
7) A spontaneous chemical reaction always has a change.
A) positive Gibbʹs free energy
B) negative Gibbʹs free energy
C) positive enthalpy
D) negative enthalpy
E) positive entropy
2
