It's C, the catalyst remains unchanged through a reaction.
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According to the </span>RNA<span> World </span>Hypothesis<span>, life later evolved to use DNA and proteins due to </span>RNA's<span> relative instability and poorer catalytic properties, and gradually, ribozymes became increasingly phased out. The ribosome, a large molecular machine that drives protein synthesis, is a ribozyme.
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Chromosome replication must occur for the process to continue.
A rigid cell wall is found in plants so they can hold themselves up.
