What molecule in the spliceosome lowers the activation energy so intron removal reactions can occur?

Question

Quizplus · Accepted Answer

Ribozymes are RNA molecules that catalyze chemical reactions, including the intron removal reactions in the spliceosome. They lower the activation energy required for the reaction to occur, making it proceed more efficiently. While proteins are also involved in the spliceosome, they do not directly lower the activation energy of the reaction like ribozymes do. RNA polymerase is involved in transcription, not splicing. Autocatalysis by introns is not a known mechanism for intron removal in the spliceosome.

What Molecule in the Spliceosome Lowers the Activation Energy So