Question

From the point of view of early chemical evolution that preceded the origin of life on earth, the most important simple organic molecules formed were

• A. Sugars and amino acids
• B. Glycerol and fatty acids
• C. Purines and pyrimidines
• D. All of the above

Answer 1

The correct option is D All of the above

The early inorganic molecules interacted and produced simple organic molecules such as simple sugars (e.g., ribose, deoxyribose, glucose, etc.), nitrogenous bases (e.g., purines, pyrimidines), amino acids, glycerol, fatty acids, etc.
$C{H}_4+C{O}_2+H_{2}O\to Sugars+Glycerol+Fattyacids$
$C{H}_4+HCN+N{H}_3+H_{2}O\to Purines+pyrimidines$
$C{H}_4+N{H}_3+C{O}_2+H_{2}O\to Aminoacids$.

So, the correct answer is 'All of the above'.