Which statement is supported by the discovery that RNA can function as a catalyst?
A) Proteins were the first catalysts.
B) An "RNA world" of early life preceded the existence of DNA.
C) Prebiotic synthesis of the four bases of RNA is not necessary for life.
D) The prebiotic origin of small molecules was in ice on cold moons.
E) The prebiotic origin of small molecules occurred around hydrothermal vents.

Question

Quizplus · Accepted Answer

The discovery that RNA can function as a catalyst supports the idea of an "RNA world" of early life preceding the existence of DNA, where RNA served both as an informational molecule and a catalyst. This hypothesis suggests that RNA was the first molecule to be able to perform both functions, which then paved the way for the evolution of proteins as catalysts.

Which Statement Is Supported by the Discovery That RNA Can