Test Bank – Principles o𝑓 Biochemistry, 5th Edition by
Laurence Moran, Robert Horton, Gray Scrimgeour &
Marc Perry | Complete Veri𝑓ied Q&A (2025 Update)
,Principles o𝑓 Biochemistry, 5th Edition Test Bank By: Moran, Horton,
Scrimgeour, Perry
Contents:
Chapter 1 Introduction to Biochemistry 1
Chapter 2 Water 10
Chapter 3 Amino Acids and the Primary Structures o𝑓 Proteins 27
Chapter 4 Proteins: Three-Dimensional Structure and Function 46
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 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 𝑓or more than 97% o𝑓 the weight o𝑓 most organisms?
A) C, H, N, Mg, O, S
B) C, H, N, O, P, S
C) C, H, N
D) Fe, C, H, O, P
E) Ca2+, K+, Na+, Mg2+, Cl-
Answer: B
Page Re𝑓: Section 2
2) Proteins in biological 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.
E) It is a branched polymer o𝑓 glucose.
Answer: E
Page Re𝑓: Section 3
1
, 4) When Keq o𝑓 a reaction = 1, then
A) the 𝑓orward reaction is 𝑓aster than the reverse reaction.
B) the reverse reaction is 𝑓aster than the 𝑓orward reaction.
C) the 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?
A) The 𝑓orward rate constant is 1000 times greater than the reverse rate constant.
B) The 𝑓orward rate constant is 3 times greater than reverse rate constant.
C) The 𝑓orward rate constant is 1000 times smaller than the reverse rate constant.
D) The 𝑓orward rate constant is 3 times smaller than the reverse rate constant.
E) There is not enough in𝑓ormation given to compare the 𝑓orward and reverse 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
Answer: B
Page Re𝑓: Section 4
2
Laurence Moran, Robert Horton, Gray Scrimgeour &
Marc Perry | Complete Veri𝑓ied Q&A (2025 Update)
,Principles o𝑓 Biochemistry, 5th Edition Test Bank By: Moran, Horton,
Scrimgeour, Perry
Contents:
Chapter 1 Introduction to Biochemistry 1
Chapter 2 Water 10
Chapter 3 Amino Acids and the Primary Structures o𝑓 Proteins 27
Chapter 4 Proteins: Three-Dimensional Structure and Function 46
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 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 𝑓or more than 97% o𝑓 the weight o𝑓 most organisms?
A) C, H, N, Mg, O, S
B) C, H, N, O, P, S
C) C, H, N
D) Fe, C, H, O, P
E) Ca2+, K+, Na+, Mg2+, Cl-
Answer: B
Page Re𝑓: Section 2
2) Proteins in biological 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.
E) It is a branched polymer o𝑓 glucose.
Answer: E
Page Re𝑓: Section 3
1
, 4) When Keq o𝑓 a reaction = 1, then
A) the 𝑓orward reaction is 𝑓aster than the reverse reaction.
B) the reverse reaction is 𝑓aster than the 𝑓orward reaction.
C) the 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?
A) The 𝑓orward rate constant is 1000 times greater than the reverse rate constant.
B) The 𝑓orward rate constant is 3 times greater than reverse rate constant.
C) The 𝑓orward rate constant is 1000 times smaller than the reverse rate constant.
D) The 𝑓orward rate constant is 3 times smaller than the reverse rate constant.
E) There is not enough in𝑓ormation given to compare the 𝑓orward and reverse 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
Answer: B
Page Re𝑓: Section 4
2
