Gene Expression Flashcard

Front

What is an operon?

Back

A unit made up of linked genes that code for proteins needed to do a specific task.

Front

What does a promoter do?

Back

It allows a gene to be transcribed.

Front

Which factors can affect the epigenome?

Back

Nutrition, exercise, stress; all of these factors can affect the epigenome.

Front

Where is an mRNA molecule with introns and exons found?

Back

In the nucleus.

Front

What happens when DNA is tightly wrapped around histone proteins and the gene is methylated?

Back

The gene is silenced.

Front

Define gene expression.

Back

The process by which information from a gene is used to synthesize a functional gene product, usually proteins.

Front

What role do ribosomes play in gene expression?

Back

Ribosomes are the sites of protein synthesis where mRNA is translated into proteins.

Front

What is the function of introns in mRNA?

Back

Introns are non-coding sequences that are removed during RNA splicing.

Front

What is the significance of exons in mRNA?

Back

Exons are coding sequences that remain in the mRNA and are translated into proteins.

Front

What is transcription?

Back

The process of copying a segment of DNA into RNA.