Multiple Choice
Which of the following is one of the primary functions of RNA polymerase during transcription?
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10. Transcription
Overview of Transcription
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Which of the following best describes what occurs during the initiation step of DNA transcription?
A
Exons are spliced together and introns are removed from the pre-mRNA.
B
RNA polymerase binds to the promoter region of the gene, causing the DNA strands to unwind.
C
Ribosomes assemble on the mRNA to begin protein synthesis.
D
DNA polymerase synthesizes a new DNA strand using the original strand as a template.
Verified step by step guidance1
Understand that transcription is the process by which RNA is synthesized from a DNA template.
Recall that the initiation step of transcription involves the enzyme RNA polymerase recognizing and binding to a specific DNA sequence called the promoter region.
Recognize that binding of RNA polymerase to the promoter causes the DNA double helix to unwind locally, allowing the enzyme to access the template strand.
Note that this unwinding and binding set the stage for RNA polymerase to begin synthesizing the RNA transcript complementary to the DNA template strand.
Differentiate this from other processes: splicing occurs after transcription, ribosome assembly happens during translation, and DNA polymerase functions in DNA replication, not transcription.
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