Ribozymes are unusual biological catalysts because they are
- A. lipid molecules with enzyme activity
- B. synthetic polymers made in the laboratory
- C. RNA molecules that catalyse reactions
- D. proteins permanently fixed to ribosomes
Explanation
The discovery that certain RNA molecules can catalyse reactions, such as self splicing, showed that not all enzymes are proteins. This evidence supported the idea of an early RNA world in which RNA stored information and catalysed reactions.
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