Question

During the course of origin of life what was the sequence of substances which appeared on earth?
A. Water, oxygen, nucleic acids, enzymes
B. Amino acids, ammonia, phosphates, nucleic acids
C. Water, amino acids, nucleic acids, enzyme
D. Ammonia, amino acids, proteins, carbohydrates
E. Ammonia, amino acids, proteins, nucleic acids

Answer 1

Abiogenesis (origin of life) is a transformative cycle of expanding multifaceted nature that included sub-atomic self-replication, self-gathering, autocatalysis, and the development of cell membranes. The investigation of abiogenesis expects to decide how pre-life compound responses offered to ascend to life under conditions strikingly not quite the same as those on Earth today.

Complete answer:
The primitive air of Earth was a lessening environment with almost no oxygen except for being wealthy in water fumes, carbon monoxide, carbon dioxide, nitrogen, and hydrogen. High temperature, UV radiations, and lightning gave energy to compound responses among hydrogen and free oxygen, nitrogen, and carbon to frame water (present in a type of superheated steam because of high earth temperature), ammonia, methane, and cyanides. Hence ammonia showed up before the beginning of amino acids.
High water temperature, nonattendance of oxygen, and living creatures encouraged synthetic responses between previously mentioned gases to shape simple natural mixes such as amino acids, unsaturated fats, glycerols, and nucleotides.
The main living things were chemoheterotrophic anaerobes which utilized inorganic components as a fuel source and natural mixes as a carbon source. Simple sugar units joined to outline polysaccharides; unsaturated fats and glycerol to shape fats; sugars, nitrogenous bases, and phosphates solidified into nucleotides which polymerized into nucleic acids in the old oceans.
Colloidal totals of a natural compound, called coacervates, filled in as a site for amalgamation of nucleic acids. RNA is filled in as hereditary material just as an impetus in early living things and catalyzed polymerization of amino acids to frame proteins.
Hence, the correct answer is option (e).

Note: Crude air was reducing type (without free oxygen). Hydrogen atoms joined with oxygen forming water and with nitrogen, shaping smelling salts. In the crude climate, electric release, ATP, and sun-powered energy gave the wellspring of energy to polymerization responses of natural union which lead to the combination of amino acids that joined to frame polypeptides and proteins. Simple sugar units joined to frame polysaccharides; unsaturated fats and glycerol to shape fats; sugars, nitrogenous bases, and phosphates consolidated into nucleotides which polymerized into nucleic acids in the old seas.