Gene Expression and Regulation Concepts

What is the primary way prokaryotes regulate their genes?

• Using microRNAs

• By alternative splicing

• Via histone modification

• Through operons

How do specialized cells in eukaryotes express different genes?

• Through differential gene expression

• They have different DNA

• By using different ribosomes

• Through operon systems

What role do histones play in gene expression?

• They are molecules that block translation

• They are sequences that enhance transcription

• They are proteins that DNA wraps around

• They are enzymes that degrade mRNA

Which of the following is NOT a control element in gene expression?

• Insulator

• Silencer

• Ribosome

• Enhancer

What is the function of transcription factors?

• To acetylate histones

• To splice RNA

• To bind to DNA and regulate transcription

• To degrade proteins

What is the main level at which eukaryotes regulate gene expression?

• Post-translational modification

• Transcription

• Translation

• RNA processing

What is alternative splicing?

• A process of modifying histones

• A type of transcription factor

• A method of RNA processing to produce different proteins

• A way to degrade mRNA

What is the role of microRNAs in gene regulation?

• They enhance transcription

• They block or degrade mRNA

• They acetylate histones

• They splice RNA

How can eukaryotic cells regulate gene expression post-translationally?

• By using operons

• By splicing RNA

• By degrading proteins

• By acetylating histones

Which process involves removing introns and joining exons?

• Alternative splicing

• Transcription

• Histone modification

• Translation