Multiple choice

Match the column – I with column – II and select the correct option ||| |---|---| |Column – I |Column – II| |A. Heterogeneous nuclear RNA|1. Pol I| |B. Ribosomal RNA|2. RNAP II and Pol II| |C. Small nuclear RNA|3. Pol III|

  1. A - 1, B - 2, C - 3

  2. A - 2, B - 1, C - 3

  3. A - 2, B - 3, C - 1

  4. A - 3, B - 2, C - 1

  5. A - 3, B - 1, C - 2
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

In eukaryotes, there are at least three RNA polymerases in the nucleus (in addition to the RNA polymerase found in the organelles). There is a clear cut division of labour. The RNA polymerase I or Pol I transcribes ribosomal RNAs (28S, 18S, and 5.8S), whereas the RNA polymerase III or Pol III is responsible for transcription of tRNA, 5srRNA, and snRNAs (small nuclear RNAs). The RNA polymerase II or RNAP II and Pol II transcribes precursor of mRNA, the heterogeneous nuclear RNA (hnRNA).

Keep practicing — related questions