Multiple Choice
Which of the following best describes the primary function of RNA polymerase in eukaryotic cells?
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10. Transcription
Transcription in Eukaryotes
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Which of the following polymerases is responsible for transcribing mRNA in eukaryotes?
A
RNA polymerase I
B
RNA polymerase II
C
RNA polymerase III
D
RNA polymerase
Verified step by step guidance1
Understand the role of RNA polymerases in eukaryotic cells: RNA polymerases are enzymes responsible for transcribing DNA into RNA. There are three main types in eukaryotes: RNA polymerase I, II, and III.
Identify the specific function of each RNA polymerase: RNA polymerase I transcribes rRNA (ribosomal RNA), RNA polymerase II transcribes mRNA (messenger RNA), and RNA polymerase III transcribes tRNA (transfer RNA) and some other small RNAs.
Focus on the transcription of mRNA: mRNA is the type of RNA that carries genetic information from DNA to the ribosome, where proteins are synthesized. This process is crucial for gene expression.
Recognize that RNA polymerase II is responsible for mRNA synthesis: In eukaryotic cells, RNA polymerase II is the enzyme that transcribes mRNA from DNA, facilitating the process of translating genetic information into proteins.
Conclude that RNA polymerase II is the correct answer for the transcription of mRNA in eukaryotes, based on its specific role in the cell.
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