Which present-day observable piece of evidence supports the "RNA world" hypothesis?
A) RNA molecules participate in biologically significant reactions.
B) RNA can serve as an information-carrying molecule.
C) RNA nucleotides catalyze peptide bond formation.
D) RNA molecules participate in biologically significant reactions, and RNA nucleotides catalyze peptide bond formation.
E) RNA molecules participate in biologically significant reactions, RNA can serve as an information-carrying molecule, and RNA nucleotides catalyze peptide bond formation.

Question

Quizplus · Accepted Answer

The fact that RNA molecules participate in biologically significant reactions, can serve as an information-carrying molecule and RNA nucleotides catalyze peptide bond formation all support the RNA world hypothesis. This hypothesis suggests that RNA was the first self-replicating molecule and the precursor to life as we know it. The fact that RNA can play such versatile roles in biology supports the idea that it may have been an important step in the evolution of life.

Which Present-Day Observable Piece of Evidence Supports the "RNA World