Multiple Choice
Where in the cell does transcription take place?
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15. Gene Expression
Introduction to Transcription
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Which action is one role of RNA polymerase during transcription?
A
Splicing introns from pre-mRNA
B
Transporting mRNA out of the nucleus
C
Synthesizing RNA from a DNA template
D
Translating RNA into proteins
Verified step by step guidance1
Understand the process of transcription: Transcription is the first step of gene expression, where a particular segment of DNA is copied into RNA by the enzyme RNA polymerase.
Identify the role of RNA polymerase: RNA polymerase is responsible for synthesizing RNA from a DNA template. It binds to the DNA at a specific region called the promoter and unwinds the DNA strands.
Differentiate between transcription and other processes: Splicing introns from pre-mRNA and transporting mRNA out of the nucleus are post-transcriptional modifications, while translating RNA into proteins is part of translation, not transcription.
Focus on the synthesis process: During transcription, RNA polymerase reads the DNA template strand and synthesizes a complementary RNA strand by adding RNA nucleotides in the 5' to 3' direction.
Conclude the role of RNA polymerase: The primary role of RNA polymerase during transcription is to synthesize RNA from a DNA template, which is the correct answer to the problem.
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