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Multiple Choice
Which of the following is one of the primary functions of RNA polymerase during transcription?
A
Translating mRNA into a polypeptide chain
B
Synthesizing an RNA strand complementary to the DNA template
C
Splicing introns from pre-mRNA
D
Adding a poly-A tail to the 3' end of mRNA
Verified step by step guidance
1
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 one strand of the DNA, known as the template strand.
Recognize that RNA polymerase binds to the DNA at the promoter region and moves along the DNA, adding RNA nucleotides complementary to the DNA template strand.
Note that RNA polymerase does not translate mRNA into polypeptides; that function belongs to the ribosome during translation.
Also, understand that splicing introns and adding a poly-A tail are post-transcriptional modifications performed by other enzymes and complexes, not by RNA polymerase.