Promoters

Question

Promoters

Quizplus · Accepted Answer

Promoters are regions of DNA that signal the start of transcription, the process of synthesizing RNA from a DNA template. The promoter contains specific sequence elements that help RNA polymerase bind and initiate transcription. The start of DNA strand separation is necessary for RNA polymerase to begin transcribing the DNA into RNA.

Answer: B 
 Promoters do not end transcription, rather they mark the start of transcription. Transcription is terminated by a variety of mechanisms depending on the specific gene and cell type.

Answer: C 
 Promoters are not made of RNA nucleotides. They are regions of DNA that contain specific sequence elements that signal the start of transcription.

Answer: D 
 Promoters are involved in transcription, not translation, which is the process of synthesizing a polypeptide chain from mRNA. The start of translation is determined by the presence of a specific sequence of nucleotides called the start codon.

Answer: E 
 Promoters aid in the initiation of transcription, but they do not directly contribute to complementary base pairing. Complementary base pairing refers to the specific pairing of nucleotides in DNA or RNA, such as A-T and C-G in DNA.