Which molecule is believed to have preceded the other three during the evolution of life?

Question

Quizplus · Accepted Answer

RNA is believed to have preceded the other three molecules during the evolution of life. This is because RNA is capable of storing genetic information as well as catalyzing chemical reactions, which are both essential functions for life. It is also thought that RNA may have been able to self-replicate, paving the way for the development of DNA and the more complex proteins. While ATP is an important molecule for energy transfer, it is not a prerequisite for life. Proteins are complex molecules that are made up of amino acids, which are coded for by DNA or RNA, so it is unlikely that they evolved prior to these nucleic acids. DNA is also essential for genetic information storage, but it is not thought to have arisen until after RNA.

Which Molecule Is Believed to Have Preceded the Other Three