Ribozymes Were Discovered ________ Protein Enzymes,even Though They ________

Question

Ribozymes were discovered ________ protein enzymes,even though they ________.
A)before; only catalyze one type of cellular reaction
B)before; are more heat labile than protein enzymes
C)after; catalyze many important cellular reactions
D)after; are the only catalysts found in bacteria and archaea
E)at the same time as; only catalyze one type of cellular reaction

Accepted Answer

Ribozymes were discovered after protein enzymes, but they catalyze many important cellular reactions, challenging the earlier belief that only proteins could serve as biological catalysts.