ID #2246

In lecture, it was said that either all ribozymes are ribosomes, or that all ribosomes are ribozymes, but I cannot remember which one it was. Which is the correct statement and why is it correct?

A ribozyme is an RNA molecule capable of acting like a protein enzyme to catalyze a biochemical reaction. As ribosomes allow the expression of protein to occur through the chemical addition of amino acids to the growing polypeptide chain during translation, all ribosomes (containing the catalytic rRNA) act as ribozymes. 

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