Gene Regulation and Expression 24

Front

What is cell differentiation?

Back

The process by which a cell becomes specialized for a specific structure or function.

Front

Define gene expression.

Back

The conversion of DNA instructions into a product such as a protein.

Front

What happens to the lac operon when lactose is present but no glucose is available?

Back

It turns on and produces lactase.

Front

Which cells in an organism contain the same DNA sequence?

Back

All cells, except red blood cells.

Front

What is the role of gene regulation in eukaryotic cells?

Back

It allows for cell specialization.

Front

What is the function of the lac operon in bacteria?

Back

To regulate the metabolism of lactose.

Front

What is the significance of transcription factors in gene regulation?

Back

They help control the transcription of specific genes by binding to nearby DNA.

Front

How does epigenetics influence gene expression?

Back

Through modifications that affect gene activity without changing the DNA sequence.

Front

What is the difference between constitutive and regulated gene expression?

Back

Constitutive expression is continuous, while regulated expression is controlled by environmental factors.

Front

What is an enhancer in the context of gene regulation?

Back

A DNA sequence that increases the likelihood of transcription of a particular gene.