Ribozymes are unusual biological catalysts because they are
Correct answer: C. RNA molecules that catalyse reactions
- 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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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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