Final answer:
In protein synthesis, the presence of a promoter and transcription factors influence the continuation of the processes during the transcription stage. Transcription factors determine whether or not a protein will be present in a cell by binding to specific DNA sequences and regulating the frequency and efficiency of transcription.
Step-by-step explanation:
In protein synthesis, the presence of a promoter and necessary transcription factors influence how the processes continue during the transcription stage. The promoter is a DNA sequence to which RNA polymerase and associated factors bind and initiate transcription. Transcription factors are proteins that bind to the DNA template strand and subsequently recruit RNA polymerase for transcription initiation.
Transcription factors play a crucial role in determining whether or not a protein will be present in a given cell. They can activate or inhibit the transcription process by binding to specific DNA sequences, called enhancers and silencers, which are located upstream of the promoter. These enhancers and silencers affect the efficiency of transcription but are not necessary for transcription to proceed.
In summary, the presence of a promoter and necessary transcription factors regulate the frequency and efficiency of transcription, ultimately determining whether or not a protein will be synthesized in a given cell.