Multiple Choice
In an overview of transcription, what is the primary role of RNA polymerase?
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10. Transcription
Overview of Transcription
Multiple Choice
During transcription, what is the primary role of RNA polymerase?
A
It joins Okazaki fragments on the lagging strand during DNA replication.
B
It transports mature mRNA from the nucleus to the cytoplasm through nuclear pores.
C
It removes introns from pre-mRNA and ligates exons together.
D
It synthesizes an RNA strand by adding ribonucleotides complementary to the DNA template strand in the to direction.
Verified step by step guidance1
Understand that transcription is the process by which RNA is synthesized from a DNA template.
Recognize that RNA polymerase is the enzyme responsible for this synthesis during transcription.
Recall that RNA polymerase reads the DNA template strand in the 3' to 5' direction and synthesizes the RNA strand in the 5' to 3' direction.
Note that RNA polymerase adds ribonucleotides complementary to the DNA template strand, forming a single-stranded RNA molecule.
Distinguish this role from other processes such as DNA replication (Okazaki fragments), mRNA transport, and RNA splicing, which involve different enzymes and mechanisms.
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