Multiple Choice
Which of the following enzymes is responsible for RNA synthesis during transcription?
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15. Gene Expression
Introduction to Transcription
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Which is the main event of transcription initiation?
A
Binding of RNA polymerase to the promoter region
B
Splicing of introns from the pre-mRNA
C
Addition of a 5' cap to the mRNA
D
Unwinding of the DNA double helix
Verified step by step guidance1
Understand the process of transcription initiation, which is the first step in gene expression where a segment of DNA is copied into RNA by the enzyme RNA polymerase.
Identify the role of RNA polymerase in transcription. RNA polymerase is responsible for synthesizing RNA by following a strand of DNA.
Recognize the importance of the promoter region. The promoter is a specific DNA sequence that signals the start of a gene and is the binding site for RNA polymerase.
Differentiate between the options given: Binding of RNA polymerase to the promoter region, Splicing of introns, Addition of a 5' cap, and Unwinding of the DNA double helix.
Conclude that the main event of transcription initiation is the binding of RNA polymerase to the promoter region, as this is the step that initiates the transcription process.
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