Question

The complex organic compounds that may have first evolved in the direction of origin of life on earth may have been ___________.

• A. protein and amino acids
• B. protein and nucleic acids
• C. urea and nucleic acids
• D. urea and amino acid

Answer 1

Answer: (A)

protein and amino acids

Proteins and nucleic acids are the two most basic compounds for sustenance of life. Proteins provided a limiting membrane and boundary to primitive entities and nucleic acids were important information molecules, which were required to build self replicating entities.