Question

Which one of the following is the correct sequence of chemical substances produced during the origin of life on the earth?

• A. Water, amino acid, nucleic acid and enzyme
• B. Glucose, amino acid, nucleic acid and protein
• C. Amino acid, ammonium phosphate and nucleic acid
• D. Ammonia, amino acid, protein and nucleic acid

Answer 1

The correct option is A Water, amino acid, nucleic acid and enzyme

Life was preceded by biomolecules. Biomolecules evolved from simple inorganic molecules present in primitive atmosphere on earth like methane, ammonia, hydrogen, nitrogen and water vapour. These simple molecules combined under the influence of thunder lightnings to generate amino acids. Aggregates of amino acids later on produced nucleic acids and biological catalysts i.e., enzymes.