A) sugars and amino-acids
B) glycerol and fatty acids
C) purines and pyrimidines
D) all of the above.
Correct Answer: D
Solution :
: Oparin suggested that from simple compounds more and more complex organic compounds were formed gradually under the influence of electric charges, ultraviolet rays or corpuscular radiations. The chemogeny completed in following steps - (i) Formation of simple molecules (ii) Formation of simple organic compounds - Alcohols, aldehydes, ketones and carbonic acids were formed by the reaction of hydrocarbons with water vapour. Later, these molecules formed simple sugars, glycerol, fatty acids and amino acids by condensation, polymerization and oxidation processes. (iii) Formation of complex organic compounds (iv) Formation of nucleoproteins (v) Formation of colloids, coacervates and first cells.
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