Asked in Premeth past paper pool — BiologyModerate

RNA polymerase synthesises new bonds between RNA nucleotides during transcription. Based on the given function, the class of enzymes to which RNA polymerase belongs is

Correct answer: B. Ligases

  • A. Lyases
  • B. Ligases
  • C. Hydrolases
  • D. Isomerases

Explanation

The correct answer is ligases. RNA polymerase catalyzes the formation of phosphodiester bonds between RNA nucleotides, which is characteristic of ligase activity. Ligases are involved in joining two molecules together, making them the appropriate class for RNA polymerase, which links nucleotides together during transcription.Lyases break bonds without hydrolysis or oxidation, which is not the function of RNA polymerase. Hydrolases use water to break bonds, which does not occur in the synthesis of RNA strands. Isomerases rearrange molecules to form isomers without adding or removing atoms, a process unrelated to the action of RNA polymerase during transcription.

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