Which have three different RNA polymerases?Multiple choice question.EukaryotesAll three domainsBacteria
Question
Which have three different RNA polymerases?Multiple choice question.EukaryotesAll three domainsBacteria
Solution
Eukaryotes have three different RNA polymerases. These are RNA polymerase I, II, and III. Each of these polymerases has a different role in RNA synthesis.
RNA polymerase I is responsible for the synthesis of ribosomal RNA (rRNA), which forms the structural and functional cores of the ribosome.
RNA polymerase II synthesizes all protein-coding nuclear pre-mRNAs, as well as most small nuclear RNAs (snRNAs), which are involved in a variety of processes such as splicing.
RNA polymerase III synthesizes tRNAs, rRNA 5S and other small RNAs found in the nucleus and cytosol.
On the other hand, bacteria only have one type of RNA polymerase.
Therefore, the correct answer to the multiple choice question is "Eukaryotes".
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