DNA, Gene Expression, and Mutations Quiz

What is a mutation?

• A type of virus

• A process of cell division

• A change that occurs in the DNA sequence of a gene or chromosome.

• A type of genetic disorder

Which of the following is NOT a type of mutation?

• Unusual

• Normal

• Atypical

• Abnormal

What is a gene mutation?

• A temporary change in the DNA sequence that makes up a gene.

• A change in the RNA sequence that makes up a gene.

• A change in the protein sequence that makes up a gene.

• A permanent alteration in the DNA sequence that makes up a gene.

Which of the following is an example of a gene mutation?

• Chromosomal mutation

• Point mutation

• Protein synthesis

• DNA replication

What is gene regulation?

• The process by which a cell destroys its genes

• The process by which a cell copies its genes

• The process by which a cell rearranges its genes

• The process by which a cell controls the expression of its genes

Which of the following is NOT a mechanism of gene regulation?

• Transcription

• Translation

• DNA replication

• Mutation

What is the role of transcription factors in gene regulation?

• They only regulate non-coding regions of DNA.

• They control the rate of translation of genetic information from RNA to protein.

• They control the rate of transcription of genetic information from DNA to messenger RNA.

• They have no role in gene regulation.

What is DNA methylation?

• The addition of phosphate groups to the DNA molecule.

• The addition of methyl groups to the DNA molecule.

• The removal of methyl groups from the DNA molecule.

• The process of breaking down DNA into smaller molecules.

What is RNA splicing?

• Process of joining introns and exons in pre-mRNA

• Process of removing exons and joining introns in pre-mRNA

• Process of removing introns and joining exons in pre-mRNA

• Process of removing introns and exons in pre-mRNA

Which of the following is an example of gene regulation?

• Binding of transcription factors to DNA

• Mutation of DNA

• Replication of DNA

• Translation of mRNA