Human Molecular Genetics (5th Edition,
2018) –Tom Strachan – Test Bank
,TABLE OF CONTENT
Part 1: Basics of DNA, Chromosomes, Cells, Development, and Inheritance
1. Basic Principles of Nucleic Acid Structure and Gene Expression.
2. Fundamentals of Cells and Chromosomes.
3. Fundamentals of Cell-Cell Interactions and Immune System Biology.
4. Aspects of Early Mammalian Development, Cell Differentiation, and Stem Cells.
5. Patterns of Inheritance.
Part 2: Understanding Genomes
6. Core DNA Technologies: Amplifying DNA, Nucleic Acid Hybirdization, and DNA Sequencing.
7. Analyzing the Structure and Expression of Genes and Genomes.
8. Principles of Genetic Manipulation of Mammalian Cells.
9. Uncovering the Architecture and Workings of the Human Genome.
10. Gene Regulation and the Epigenome.
Part 3: Genetic Variation Between Individuals and Species
11. An Overview of Human Genetic Variation.
12. Human Population Genetics.
13. Comparative Genomics and Genome Evolution.
14. Human Evolution.
Part 4: Human Genetic Disease
15. Chromosomal Abnormalities and Structural Variants.
16. Molecular Pathology: Connecting Phenotypes to Genotypes.
17. Mapping and Identifying Genes for Monogenic Disorders.
18. Complex Disease: Identifying Susceptibility Factors and Understanding Pathogenesis.
19. Cancer Genetics and Genomics.
Part 5: Applied Human Molecular Genetics
20. Genetic Testing in Healthcare and the Law.
21. Model Organisms and Modeling Disease.
22. Genetic Approaches to Treating Disease.
,Chapter 1: Basic Principles of Nucleic Acid Structure and Gene Expression
1. Which of the following statements accurately describes the structure of DNA?
A. DNA is composed of a double helix of amino acids.
B. DNA is made up of nucleotides, which include a sugar, phosphate group,
and nitrogenous base.
C. DNA has a single-stranded structure in cells.
D. DNA contains uracil instead of thymine.
Correct Answer: B
Rationale: DNA is composed of nucleotides that include a deoxyribose sugar,
phosphate group, and nitrogenous bases (adenine, thymine, cytosine, and guanine). It
has a double helix structure, not a single strand.
2. What is the primary function of ribonucleic acid (RNA)?
A. To store genetic information.
B. To serve as a template for protein synthesis.
C. To form the structural components of the cell.
D. To replicate DNA.
Correct Answer: B
Rationale: RNA plays a crucial role in protein synthesis by serving as a messenger
between DNA and ribosomes, where proteins are synthesized.
3. Which of the following nitrogenous bases is found in RNA but not in DNA?
A. Adenine
B. Cytosine
C. Uracil
D. Thymine
Correct Answer: C
Rationale: Uracil is present in RNA, while thymine is found only in DNA. RNA uses
uracil instead of thymine.
4. During transcription, which enzyme is responsible for synthesizing RNA from
the DNA template?
A. DNA polymerase
B. RNA polymerase
C. Ligase
D. Helicase
Correct Answer: B
Rationale: RNA polymerase is the enzyme that synthesizes RNA by reading the DNA
template during the transcription process.
5. Which of the following processes describes the conversion of messenger
RNA (mRNA) into a protein?
A. Transcription
B. Replication
C. Translation
D. Translocation
Correct Answer: C
Rationale: Translation is the process by which mRNA is decoded to synthesize
proteins at the ribosome.
, 6. What is the significance of the genetic code being described as "degenerate"?
A. Each amino acid is coded by only one codon.
B. More than one codon can specify the same amino acid.
C. Codons can only specify a single amino acid.
D. All codons are identical across different organisms.
Correct Answer: B
Rationale: The genetic code is considered degenerate because multiple codons can
encode the same amino acid, providing redundancy in the genetic code.
7. Which of the following structures is responsible for carrying amino acids to
the ribosome during protein synthesis?
A. mRNA
B. rRNA
C. tRNA
D. DNA
Correct Answer: C
Rationale: Transfer RNA (tRNA) is responsible for transporting specific amino acids to
the ribosome, where they are assembled into proteins according to the mRNA
template.
8. In DNA replication, what is the role of helicase?
A. To add nucleotides to the growing DNA strand.
B. To separate the double-stranded DNA into two single strands.
C. To join Okazaki fragments.
D. To synthesize RNA primers.
Correct Answer: B
Rationale: Helicase unwinds and separates the double-stranded DNA, allowing each
strand to serve as a template for replication.
9. What is the function of the promoter region in a gene?
A. To terminate transcription.
B. To enhance mRNA stability.
C. To initiate transcription by providing a binding site for RNA polymerase.
D. To encode the amino acid sequence of a protein.
Correct Answer: C
Rationale: The promoter is a specific DNA sequence that signals the start of a gene
and is the binding site for RNA polymerase to initiate transcription.
10. Which of the following best describes the role of a spliceosome in eukaryotic cells?
A. It synthesizes proteins from mRNA.
B. It removes introns and joins exons in pre-mRNA.
C. It helps in DNA replication.
D. It translates mRNA into proteins.
Correct Answer: B
Rationale: The spliceosome is a complex of proteins and RNA that catalyzes
the removal of introns from pre-mRNA and splices together exons to produce
mature mRNA.
11. What is the end product of transcription?
A. DNA
B. Protein
C. mRNA
2018) –Tom Strachan – Test Bank
,TABLE OF CONTENT
Part 1: Basics of DNA, Chromosomes, Cells, Development, and Inheritance
1. Basic Principles of Nucleic Acid Structure and Gene Expression.
2. Fundamentals of Cells and Chromosomes.
3. Fundamentals of Cell-Cell Interactions and Immune System Biology.
4. Aspects of Early Mammalian Development, Cell Differentiation, and Stem Cells.
5. Patterns of Inheritance.
Part 2: Understanding Genomes
6. Core DNA Technologies: Amplifying DNA, Nucleic Acid Hybirdization, and DNA Sequencing.
7. Analyzing the Structure and Expression of Genes and Genomes.
8. Principles of Genetic Manipulation of Mammalian Cells.
9. Uncovering the Architecture and Workings of the Human Genome.
10. Gene Regulation and the Epigenome.
Part 3: Genetic Variation Between Individuals and Species
11. An Overview of Human Genetic Variation.
12. Human Population Genetics.
13. Comparative Genomics and Genome Evolution.
14. Human Evolution.
Part 4: Human Genetic Disease
15. Chromosomal Abnormalities and Structural Variants.
16. Molecular Pathology: Connecting Phenotypes to Genotypes.
17. Mapping and Identifying Genes for Monogenic Disorders.
18. Complex Disease: Identifying Susceptibility Factors and Understanding Pathogenesis.
19. Cancer Genetics and Genomics.
Part 5: Applied Human Molecular Genetics
20. Genetic Testing in Healthcare and the Law.
21. Model Organisms and Modeling Disease.
22. Genetic Approaches to Treating Disease.
,Chapter 1: Basic Principles of Nucleic Acid Structure and Gene Expression
1. Which of the following statements accurately describes the structure of DNA?
A. DNA is composed of a double helix of amino acids.
B. DNA is made up of nucleotides, which include a sugar, phosphate group,
and nitrogenous base.
C. DNA has a single-stranded structure in cells.
D. DNA contains uracil instead of thymine.
Correct Answer: B
Rationale: DNA is composed of nucleotides that include a deoxyribose sugar,
phosphate group, and nitrogenous bases (adenine, thymine, cytosine, and guanine). It
has a double helix structure, not a single strand.
2. What is the primary function of ribonucleic acid (RNA)?
A. To store genetic information.
B. To serve as a template for protein synthesis.
C. To form the structural components of the cell.
D. To replicate DNA.
Correct Answer: B
Rationale: RNA plays a crucial role in protein synthesis by serving as a messenger
between DNA and ribosomes, where proteins are synthesized.
3. Which of the following nitrogenous bases is found in RNA but not in DNA?
A. Adenine
B. Cytosine
C. Uracil
D. Thymine
Correct Answer: C
Rationale: Uracil is present in RNA, while thymine is found only in DNA. RNA uses
uracil instead of thymine.
4. During transcription, which enzyme is responsible for synthesizing RNA from
the DNA template?
A. DNA polymerase
B. RNA polymerase
C. Ligase
D. Helicase
Correct Answer: B
Rationale: RNA polymerase is the enzyme that synthesizes RNA by reading the DNA
template during the transcription process.
5. Which of the following processes describes the conversion of messenger
RNA (mRNA) into a protein?
A. Transcription
B. Replication
C. Translation
D. Translocation
Correct Answer: C
Rationale: Translation is the process by which mRNA is decoded to synthesize
proteins at the ribosome.
, 6. What is the significance of the genetic code being described as "degenerate"?
A. Each amino acid is coded by only one codon.
B. More than one codon can specify the same amino acid.
C. Codons can only specify a single amino acid.
D. All codons are identical across different organisms.
Correct Answer: B
Rationale: The genetic code is considered degenerate because multiple codons can
encode the same amino acid, providing redundancy in the genetic code.
7. Which of the following structures is responsible for carrying amino acids to
the ribosome during protein synthesis?
A. mRNA
B. rRNA
C. tRNA
D. DNA
Correct Answer: C
Rationale: Transfer RNA (tRNA) is responsible for transporting specific amino acids to
the ribosome, where they are assembled into proteins according to the mRNA
template.
8. In DNA replication, what is the role of helicase?
A. To add nucleotides to the growing DNA strand.
B. To separate the double-stranded DNA into two single strands.
C. To join Okazaki fragments.
D. To synthesize RNA primers.
Correct Answer: B
Rationale: Helicase unwinds and separates the double-stranded DNA, allowing each
strand to serve as a template for replication.
9. What is the function of the promoter region in a gene?
A. To terminate transcription.
B. To enhance mRNA stability.
C. To initiate transcription by providing a binding site for RNA polymerase.
D. To encode the amino acid sequence of a protein.
Correct Answer: C
Rationale: The promoter is a specific DNA sequence that signals the start of a gene
and is the binding site for RNA polymerase to initiate transcription.
10. Which of the following best describes the role of a spliceosome in eukaryotic cells?
A. It synthesizes proteins from mRNA.
B. It removes introns and joins exons in pre-mRNA.
C. It helps in DNA replication.
D. It translates mRNA into proteins.
Correct Answer: B
Rationale: The spliceosome is a complex of proteins and RNA that catalyzes
the removal of introns from pre-mRNA and splices together exons to produce
mature mRNA.
11. What is the end product of transcription?
A. DNA
B. Protein
C. mRNA
