TEST BANK
Principles of Biochemistry 5th Edition
by Laurence Moran, Robert Horton, Chapters 1 to 23
,Contents:
Chapter 1 Introduction to Biochemistry 1
Chapter 2 Water 10
Chapter 3 Amino Acids and the Primary Structures oƒ Proteins 27
Chapter 4 Proteins: Three-Dimensional Structure and Ƒunction 46
Chapter 5 Properties oƒ Enzymes 65
Chapter 6 Mechanisms oƒ Enzymes 85
Chapter 7 Coenzymes and Vitamins 104
Chapter 8 Carbohydrates 119
Chapter 9 Lipids and Membranes 137
Chapter 10 Introduction to Metabolism 153
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 Phosphorylation 213
Chapter 15 Photosynthesis 227
Chapter 16 Lipid Metabolism 241
Chapter 17 Amino Acid Metabolism 256
Chapter 18 Nucleotide Metabolism 269
Chapter 19 Nucleic Acids 284
Chapter 20 DNA Replication, Repair, and Recombination 300
Chapter 21 Transcription and RNA Processing 315
Chapter 22 Protein Synthesis 330
Chapter 23 Recombinant DNA Technology 348
,Chapter 1 Introduction to Biochemistry
1) Which elements account ƒor more than 97% oƒ the weight oƒ most organisms?
A) C, H, N, Mg, O, S
B) C, H, N, O, P, S
C) C, H, N
D) Ƒe, C, H, O, P
E) Ca2+, K+, Na+, Mg2+, Cl-
Answer: B
Page Reƒ: Section 2
2) Proteins in biological membranes may be
A) porous.
B) attached to the membrane surƒace.
C) span the membrane.
D) All oƒ the above
E) B and C only
Answer: D
Page Reƒ: Section 3
3) Which statement about cellulose is ƒalse?
A) It is the most abundant polysaccharide in nature.
B) Its monomers are joined by glycosidic bonds.
C) It is present in the stems oƒ ƒlowering plants.
D) The hydroxyl groups oƒ neighboring cellulose molecules interact to ƒorm strong,
insoluble ƒibers.
E) It is a branched polymer oƒ glucose.
Answer: E
Page Reƒ: Section 3
1
, 4) When Keq oƒ a reaction = 1, then
A) the ƒorward reaction is ƒaster than the reverse reaction.
B) the reverse reaction is ƒaster than the ƒorward reaction.
C) the ƒorward and reverse reaction rate constants are equal.
D) more products are ƒormed than reactants.
E) ƒewer products are ƒormed than reactants.
Answer: C
Page Reƒ: Section 4
5) Which statement is true about a reaction with an equilibrium constant, Keq, equal to 1000?
A) The ƒorward rate constant is 1000 times greater than the reverse rate constant.
B) The ƒorward rate constant is 3 times greater than reverse rate constant.
C) The ƒorward rate constant is 1000 times smaller than the reverse rate constant.
D) The ƒorward rate constant is 3 times smaller than the reverse rate constant.
E) There is not enough inƒormation given to compare the ƒorward and reverse rate constants.
Answer: A
Page Reƒ: Section 4
6) The study oƒ the energy changes during metabolic reactions is called .
A) bioinƒormatics
B) metabodynamics
C) thermometrics
D) bioenergetics
E) biological heat dynamics
Answer: D
Page Reƒ: Section 4
7) A spontaneous chemical reaction always has a change.
A) positive Gibbʹs ƒree energy
B) negative Gibbʹs ƒree energy
C) positive enthalpy
D) negative enthalpy
E) positive entropy
Answer: B
Page Reƒ: Section 4
2
Principles of Biochemistry 5th Edition
by Laurence Moran, Robert Horton, Chapters 1 to 23
,Contents:
Chapter 1 Introduction to Biochemistry 1
Chapter 2 Water 10
Chapter 3 Amino Acids and the Primary Structures oƒ Proteins 27
Chapter 4 Proteins: Three-Dimensional Structure and Ƒunction 46
Chapter 5 Properties oƒ Enzymes 65
Chapter 6 Mechanisms oƒ Enzymes 85
Chapter 7 Coenzymes and Vitamins 104
Chapter 8 Carbohydrates 119
Chapter 9 Lipids and Membranes 137
Chapter 10 Introduction to Metabolism 153
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 Phosphorylation 213
Chapter 15 Photosynthesis 227
Chapter 16 Lipid Metabolism 241
Chapter 17 Amino Acid Metabolism 256
Chapter 18 Nucleotide Metabolism 269
Chapter 19 Nucleic Acids 284
Chapter 20 DNA Replication, Repair, and Recombination 300
Chapter 21 Transcription and RNA Processing 315
Chapter 22 Protein Synthesis 330
Chapter 23 Recombinant DNA Technology 348
,Chapter 1 Introduction to Biochemistry
1) Which elements account ƒor more than 97% oƒ the weight oƒ most organisms?
A) C, H, N, Mg, O, S
B) C, H, N, O, P, S
C) C, H, N
D) Ƒe, C, H, O, P
E) Ca2+, K+, Na+, Mg2+, Cl-
Answer: B
Page Reƒ: Section 2
2) Proteins in biological membranes may be
A) porous.
B) attached to the membrane surƒace.
C) span the membrane.
D) All oƒ the above
E) B and C only
Answer: D
Page Reƒ: Section 3
3) Which statement about cellulose is ƒalse?
A) It is the most abundant polysaccharide in nature.
B) Its monomers are joined by glycosidic bonds.
C) It is present in the stems oƒ ƒlowering plants.
D) The hydroxyl groups oƒ neighboring cellulose molecules interact to ƒorm strong,
insoluble ƒibers.
E) It is a branched polymer oƒ glucose.
Answer: E
Page Reƒ: Section 3
1
, 4) When Keq oƒ a reaction = 1, then
A) the ƒorward reaction is ƒaster than the reverse reaction.
B) the reverse reaction is ƒaster than the ƒorward reaction.
C) the ƒorward and reverse reaction rate constants are equal.
D) more products are ƒormed than reactants.
E) ƒewer products are ƒormed than reactants.
Answer: C
Page Reƒ: Section 4
5) Which statement is true about a reaction with an equilibrium constant, Keq, equal to 1000?
A) The ƒorward rate constant is 1000 times greater than the reverse rate constant.
B) The ƒorward rate constant is 3 times greater than reverse rate constant.
C) The ƒorward rate constant is 1000 times smaller than the reverse rate constant.
D) The ƒorward rate constant is 3 times smaller than the reverse rate constant.
E) There is not enough inƒormation given to compare the ƒorward and reverse rate constants.
Answer: A
Page Reƒ: Section 4
6) The study oƒ the energy changes during metabolic reactions is called .
A) bioinƒormatics
B) metabodynamics
C) thermometrics
D) bioenergetics
E) biological heat dynamics
Answer: D
Page Reƒ: Section 4
7) A spontaneous chemical reaction always has a change.
A) positive Gibbʹs ƒree energy
B) negative Gibbʹs ƒree energy
C) positive enthalpy
D) negative enthalpy
E) positive entropy
Answer: B
Page Reƒ: Section 4
2
