Final answer:
The components of the leader sequence in a mRNA regulated by attenuation are the regulatory molecule binding site, the translation start site, and the terminator.
Step-by-step explanation:
In mRNA regulated by attenuation, the leader sequence consists of several components:
- The regulatory molecule binding site
- The translation start site
- The terminator
These components interact with each other to determine if transcription will proceed and if the mRNA will be used for translation.