Question

The correct sequence for the manufacture of the compounds on the primitive earth is

• A. $NH_{3}$, $CH_{4}$, protein and carbohydrate
• B. protein, carbohydrate, water and nucleic acid
• C. $NH_{3}$, $CH_{4}$, carbohydrate and nucleic acid
• D. $NH_{3}$ carbohydrate, protein and nucleic acid

Answer 1

Answer: (D)

$NH_{3}$ carbohydrate, protein and nucleic acid

Answer 2

The correct option is(D): $NH_{3}$ carbohydrate, protein and nucleic acid
Hydrogen atoms were most numerous and most reactive in primitive atmosphere. First hydrogen atoms combined with all oxygen atoms to form water and leaving no free oxygen. Hydrogen atoms also combined 406 with nitrogen, forming ammonia NH3. So water and ammonia were probably the first compound molecules of primitive earth. Later methane, water and NH3, join to form amino acids which gets converted into proteins while hydrogen bases, sugars and phosphates combine to form nucleic acids.