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  • The first living beings on earth were anaerobic because  Option: 1 there was no oxygen in air<stron

The first living beings on earth were anaerobic because
 

Option: 1

there was no oxygen in air


Option: 2

oxygen damages proteins


Option: 3

oxygen interferes with the action of ribozymes 

 


Option: 4

 they evolved in deep sea


Answers (1)

best_answer

The first living beings on Earth were likely anaerobic organisms because the Earth's atmosphere lacked oxygen during its early stages. This period, known as the Precambrian or Archean era, lasted for billions of years before oxygen began to accumulate in the atmosphere through the process of photosynthesis by cyanobacteria. Anaerobic organisms, which do not require oxygen for their metabolism, were able to thrive in this oxygen-free environment. As oxygen levels gradually increased, aerobic organisms capable of utilizing oxygen for energy production emerged.

Hence, the correct answer is option 1.

Posted by

Nehul

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