Test Bank –
Lehninger Principles of Biochemistry,
by Nelson
8th edition
,TABLE OF CONTENTS
Chapter Title
1 The Foundations of Biochemistry
2 Water
3 Amino Acids, Peptides, and Proteins
4 The Three-Dimensional Structure of Proteins
5 Protein Function
6 Enzymes
7 Carbohydrates and Glycobiology
8 Nucleotides and Nucleic Acids
9 DNA-Based Information Technologies
10 Lipids
11 Biological Membranes and Transport
12 Biosignaling
13 Bioenergetics and Biochemical Reaction Types
14 Glycolysis, Gluconeogenesis, and the Pentose Phosphate Pathway
15 Principles of Metabolic Regulation
16 The Citric Acid Cycle
17 Fatty Acid Catabolism
18 Amino Acid Oxidation and the Production of Urea
19 Oxidative Phosphorylation
20 Photosynthesis and Carbohydrate Synthesis in Plants
21 Lipid Biosynthesis
,Chapter Title
22 Biosynthesis of Amino Acids, Nucleotides, and Related Molecules
23 Hormonal Regulation and Integration of Mammalian Metabolism
24 Genes and Chromosomes
25 DNA Metabolism
26 RNA Metabolism
27 Protein Metabolism
28 Regulation of Gene Expression
, CHAPTER 1: THE FOUNDATIONS OF BIOCHEMISTRY
1. Which of the following best describes the unifying theme of biochemistry?
A) All living organisms are composed of the same set of molecules
B) The molecular logic of life is fundamentally the same in all organisms
C) Biochemical reactions occur only in aqueous environments
D) All organisms use DNA as their genetic material except some viruses
Correct Answer: B
Rationale: The central unifying theme of biochemistry is that the molecular logic of life—how organisms
extract energy, build macromolecules, and store/transmit genetic information—is fundamentally the
same across all species. While A and D contain some truth, they are specific facts rather than the
overarching unifying theme. C is largely true but is not the unifying principle.
2. The estimated number of species on Earth is approximately:
A) 1–2 million
B) 5–30 million
C) 100 million
D) 1 billion
Correct Answer: B
Rationale: Current estimates suggest there are between 5 and 30 million species on Earth, though only
about 1.5–2 million have been formally identified and described. This enormous diversity is built upon a
remarkably conserved set of biochemical principles.
3. Which of the following is NOT one of the three domains of life?
A) Bacteria
B) Archaea
C) Eukarya
D) Protista
Lehninger Principles of Biochemistry,
by Nelson
8th edition
,TABLE OF CONTENTS
Chapter Title
1 The Foundations of Biochemistry
2 Water
3 Amino Acids, Peptides, and Proteins
4 The Three-Dimensional Structure of Proteins
5 Protein Function
6 Enzymes
7 Carbohydrates and Glycobiology
8 Nucleotides and Nucleic Acids
9 DNA-Based Information Technologies
10 Lipids
11 Biological Membranes and Transport
12 Biosignaling
13 Bioenergetics and Biochemical Reaction Types
14 Glycolysis, Gluconeogenesis, and the Pentose Phosphate Pathway
15 Principles of Metabolic Regulation
16 The Citric Acid Cycle
17 Fatty Acid Catabolism
18 Amino Acid Oxidation and the Production of Urea
19 Oxidative Phosphorylation
20 Photosynthesis and Carbohydrate Synthesis in Plants
21 Lipid Biosynthesis
,Chapter Title
22 Biosynthesis of Amino Acids, Nucleotides, and Related Molecules
23 Hormonal Regulation and Integration of Mammalian Metabolism
24 Genes and Chromosomes
25 DNA Metabolism
26 RNA Metabolism
27 Protein Metabolism
28 Regulation of Gene Expression
, CHAPTER 1: THE FOUNDATIONS OF BIOCHEMISTRY
1. Which of the following best describes the unifying theme of biochemistry?
A) All living organisms are composed of the same set of molecules
B) The molecular logic of life is fundamentally the same in all organisms
C) Biochemical reactions occur only in aqueous environments
D) All organisms use DNA as their genetic material except some viruses
Correct Answer: B
Rationale: The central unifying theme of biochemistry is that the molecular logic of life—how organisms
extract energy, build macromolecules, and store/transmit genetic information—is fundamentally the
same across all species. While A and D contain some truth, they are specific facts rather than the
overarching unifying theme. C is largely true but is not the unifying principle.
2. The estimated number of species on Earth is approximately:
A) 1–2 million
B) 5–30 million
C) 100 million
D) 1 billion
Correct Answer: B
Rationale: Current estimates suggest there are between 5 and 30 million species on Earth, though only
about 1.5–2 million have been formally identified and described. This enormous diversity is built upon a
remarkably conserved set of biochemical principles.
3. Which of the following is NOT one of the three domains of life?
A) Bacteria
B) Archaea
C) Eukarya
D) Protista
