교과서 질문
DNA's primary structure is made up of just four different bases, and its secondary structure is regular and highly stable. How can a molecule with these characteristics hold the information required to build and maintain a cell?
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15. Gene Expression
Introduction to Transcription
Multiple Choice
Where does RNA polymerase begin transcribing a gene into mRNA?
A
At the enhancer region
B
At the promoter region
C
At the terminator sequence
D
At the start codon
검증된 단계별 안내1
Understand the role of RNA polymerase in transcription: RNA polymerase is an enzyme responsible for synthesizing RNA from a DNA template during the process of transcription.
Identify the key regions involved in transcription: The main regions to consider are the promoter region, the enhancer region, the start codon, and the terminator sequence.
Clarify the function of the promoter region: The promoter is a specific sequence of DNA where RNA polymerase binds to initiate transcription. It is located upstream of the gene to be transcribed.
Differentiate between the promoter and other regions: The enhancer region is involved in increasing the transcription rate but is not where transcription starts. The start codon is part of the mRNA and signals the beginning of translation, not transcription. The terminator sequence signals the end of transcription.
Conclude that RNA polymerase begins transcribing a gene into mRNA at the promoter region, as it is the site where the enzyme binds to start the transcription process.
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