AP Bio Operons

Front

What is a Gene?

Back

A segment of DNA that codes for a protein.

Front

In which type of organisms are operons found?

Back

Prokaryotes (bacteria).

Front

What type of operon is the trp (tryptophan) operon?

Back

Repressible.

Front

Where can we find the promoter and terminator?

Back

In DNA.

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 is the function of a promoter in an operon?

Back

It is a DNA sequence that initiates transcription of a gene.

Front

What is the role of a terminator in an operon?

Back

It signals the end of transcription.

Front

What is the difference between repressible and inducible operons?

Back

Repressible operons are usually on and can be turned off, while inducible operons are usually off and can be turned on.

Front

What is an example of an inducible operon?

Back

The lac operon.

Front

What is the function of the lac operon?

Back

It allows for the metabolism of lactose in bacteria.