Multiple Choice
In the overview of transcription, what is the primary role of RNA polymerase?
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10. Transcription
Overview of Transcription
Multiple Choice
In the context of transcription, what is the primary function of RNA polymerase?
A
It removes introns from pre-mRNA and ligates exons together.
B
It synthesizes an RNA strand complementary to a DNA template by catalyzing phosphodiester bond formation.
C
It transports mature mRNA from the nucleus to the cytoplasm through nuclear pores.
D
It joins Okazaki fragments on the lagging strand during DNA replication.
Verified step by step guidance1
Understand the role of RNA polymerase in the process of transcription, which is the synthesis of RNA from a DNA template.
Recall that transcription involves creating an RNA strand that is complementary to the DNA template strand, ensuring the genetic information is accurately transferred.
Recognize that RNA polymerase catalyzes the formation of phosphodiester bonds between ribonucleotides, linking them together to form the RNA strand.
Differentiate RNA polymerase's function from other processes such as intron removal (which is done by the spliceosome), mRNA transport (handled by nuclear pore complexes), and DNA replication activities like joining Okazaki fragments (performed by DNA ligase).
Conclude that the primary function of RNA polymerase is to synthesize an RNA strand complementary to the DNA template by catalyzing phosphodiester bond formation.
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