Unit 6 - Trp and Lac Operon

Front

What is the name of the binding site of RNA polymerase in eukaryotes?

Back

promoter

Front

What is the function of RNA polymerase in transcription?

Back

RNA polymerase synthesizes RNA from a DNA template.

Front

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

Back

repressible

Front

What is the role of the lac operon in gene regulation?

Back

The lac operon regulates the metabolism of lactose in bacteria.

Front

What is the inducer in the lac operon?

Back

allolactose

Front

What is the role of operons in prokaryote gene expression?

Back

Operons regulate gene activity in response to the needs of the cells.

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 the significance of the promoter region in gene expression?

Back

The promoter region is essential for the initiation of transcription by RNA polymerase.

Front

How does allolactose function in the lac operon?

Back

Allolactose binds to the repressor protein, preventing it from inhibiting transcription.

Front

What is the role of the repressor protein in the lac operon?

Back

The repressor protein binds to the operator region to block transcription when lactose is absent.