Question

In the context of a transcription unit, how do the Promoter and Terminator work together to regulate the transcription process?

विकल्प

• They work on opposite strands and do not interact functionally

• The Promoter signals the start of transcription by binding RNA polymerase, while the Terminator signals the end and causes RNA polymerase to dissociate

• Both elements bind RNA polymerase simultaneously to begin transcription

• The Terminator prevents the Promoter from functioning

Answer 1

The Promoter and Terminator define the boundaries of the transcription unit and regulate the temporal and spatial aspects of transcription. The Promoter provides a specific recognition and binding site that recruits and positions RNA polymerase at the start site. The Terminator signals the end point: when transcribed into RNA, it forms structures or sequences recognized by termination factors, triggering the release of the nascent RNA and dissociation of RNA polymerase, thus defining the precise length of the transcript.