Question

One of the earliest theories suggested that life began in shallow pools. Recent studies leads the extensive debate regarding the origin of life. According to some researcher, where did the life have originate?

• A. Near deep sea vents
• B. As viral particles
• C. In mudflats
• D. From debris left behind when meteorites crashed to earth
• E. From naked strands of RNA

Answer 1

The correct option is A Near deep sea vents

Since the first life forms were chemoheterotrophs, it is assumed that life originated in deep sea vents wherein available inorganic compounds served as an energy source. Soon, these autotrophs evolved as available resources started becoming scarce and these autotrophs used oxidation of organic /inorganic compounds as a source of energy for driving fixation of carbon. Both chemoheterotrophs and chemoautotrophs were anaerobes as there no oxygen. Thus, the correct answer is option A.