Question

question 4 the discovery of ribozymes (the ribosome acting as an enzyme to catalyze the formation of proteins) meant that a only proteins have catalytic function b only nucleic acids have a catalytic function c rrnas can act as enzymes d rna has the same function as protein

Explanation:

Ribozymes are RNA - molecules with catalytic activity. This discovery showed that nucleic acids (RNA is a nucleic acid) can have catalytic functions, not just proteins. rRNAs are a type of RNA and ribosomes (which contain rRNA) can act as enzymes in protein - synthesis. RNA and protein have different overall functions in the cell.

Answer:

B. Only nucleic acids have a catalytic function