It has been hypothesized that early life consisted of an "RNA world"-a world before DNA.Which statement does not support this hypothesis?
A) Retroviruses have an enzyme that catalyzes the synthesis of DNA from RNA.
B) Protein enzymes catalyze the great majority of reactions in living cells.
C) Ribozymes catalyze formation of peptide linkages.
D) Adding a short RNA sequence to a mixture of nucleotides causes formation of RNA polymers 7 million times faster than without the short sequence.
E) An artificial ribozyme catalyzes assembly of short RNAs into a longer molecule that is a copy of itself.

Question

Quizplus · Accepted Answer

This statement suggests that proteins, not RNA, are responsible for catalyzing the majority of reactions in living cells, which contradicts the idea of an RNA world.

It Has Been Hypothesized That Early Life Consisted of an "RNA