Question

In most hypotheses of early Earth and the formation of life, it is accepted that the atmosphere was a reducing one. This means that there was an abundance of methane, ammonia, and water vapor, but there was an absence of significant amounts of oxygen gas. Based on this assumption, what was likely the first metabolic activity to harness ATP to evolve in primitive cells?

Answer 1

C) Glycolysis, as this does not require organelles not oxygen

Step-by-step explanation:

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Answer 2

Glycolysis, as this does not require organelles not oxygen

Step-by-step explanation:

As we know the atmosphere of early Earth was reducing in nature. It was an oxygen-depleted environment. Hence, for metabolic activities at that time, an oxygen-free metabolic activity was required.

Glycolysis is considered to be the most primitive method for metabolic activities as this process can occur both in the presence or absence of oxygen.

Scientists believe that the origin of life i.e early prokaryotes were heterotrophic in nature and obtained energy for metabolic activities through fermenting molecules which were present in the sea.