Question

What is the number of RNA polymerases found in eukaryotes?

Answer 1

RNA polymerase:

1. Ribonucleic Acid (RNA) polymerase is an enzyme that converts gene sequences into RNA-based genetic information that may be used in protein synthesis.
2. RNA polymerase is a multi-unit enzyme that synthesises RNA molecules from a DNA template via a process known as transcription.
3. These enzymes in eukaryotes have eight or more subunits that aid in the attachment and processing of DNA during transcription.
4. While prokaryotes, such as bacteria, have a single RNA polymerase that transcribes all kinds of RNA, eukaryotes, such as plants and mammals, can contain many types of RNA polymerase.

The number of RNA polymerases found in eukaryotes:

1. Three different nuclear RNA polymerases are found in eukaryotic cells.
2. RNA polymerase I: It is in charge of generating the majority of ribosomal RNA (rRNA) transcripts.
3. RNA polymerase II: It is responsible for converting protein-coding genes into messenger RNA (mRNA).
4. RNA polymerase III: It is responsible for converting rRNA genes into tiny RNAs such as transfer RNA (tRNA) and 5S rRNA.