How does this figure illustrate a line of evidence supporting RNA world?
A) This figure illustrates a cofactor that indicates catalytic and structural functions performed by RNAs.
B) This figure illustrates the removal of a hydroxyl group through a ribonucleotide reductase.
C) This figure shows the catalytic site of a ribosome that is formed entirely from RNA.
D) This figure illustrates one of the many essential parts of RNA present in the prebiotic environment.

Question

How does this figure illustrate a line of evidence supporting RNA world? 
A) This figure illustrates a cofactor that indicates catalytic and structural functions performed by RNAs. 
B) This figure illustrates the removal of a hydroxyl group through a ribonucleotide reductase. 
C) This figure shows the catalytic site of a ribosome that is formed entirely from RNA. 
D) This figure illustrates one of the many essential parts of RNA present in the prebiotic environment.

Quizplus · Accepted Answer

The figure shows the catalytic site of a ribosome, which is formed entirely from RNA. This provides evidence that RNA can have catalytic functions and support the RNA world hypothesis, which suggests that RNA was the first self-replicating molecule on Earth and preceded the evolution of DNA and proteins.

How Does This Figure Illustrate a Line of Evidence Supporting