What molecule is responsible for the catalytic activity in the spliceosomes that are involved in removal of introns?
A)RNA polymerase
B)ribozymes
C)proteins of the spliceosome
D)autocatalysis by introns

Question

Quizplus · Accepted Answer

Ribozymes are RNA molecules that can perform catalytic reactions, and are responsible for the catalytic activity within spliceosomes during intron removal. The proteins within the spliceosome help to bind and position the RNA molecules for optimal catalysis, but do not have direct catalytic activity themselves. RNA polymerase is responsible for the synthesis of RNA molecules and not involved in intron removal. Autocatalysis by introns is not a known mechanism for intron removal.

What Molecule Is Responsible for the Catalytic Activity in the Spliceosomes