Question

What is a ribozyme?

Options

• An RNA molecule that acts as a biological catalyst

• A protein that catalyzes RNA synthesis

• A DNA sequence that codes for RNA

• A ribosomal protein with enzymatic activity

Answer 1

A ribozyme is an RNA molecule that acts as a biological catalyst (enzyme). Before 1982, it was universally believed that only proteins could function as enzymes, making the discovery of ribozymes revolutionary evidence for the RNA World Hypothesis.