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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About Characteristics of Enzymes
Enzymes are globular biological catalysts that lower activation energy without being consumed, usually showing specificity for particular substrates. Questions cover active sites, enzyme substrate complexes, the lock and key and induced fit models, intracellular and extracellular action, and the effects of denaturation, while distinguishing enzymes from non biological catalysts.
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