Compare and contrast spliceosomes and ribosomes. Match each description to the correct structure. Spliceosomes produces mature mRNA Ribosomes Why might spliceosomes and ribosomes be so similar? Answer Bank composed of RNA and protein components has catalytic RNA Both catalyzes peptide bond formation Spliceosomes and ribosomes perform the same catalytic reaction. Both spliceosomes and ribosomes bind to RNA molecules at the same sequences. The catalytic RNAs of both are thought to have originated when RNA molecules served to store information and catalyze reactions. These structures were both obtained by eukaryotes through the process of horizontal gene transfer.

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