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Which one of the following types of organisms most closely resembles the common ancestor of all life?
A) plants
B) bacteria
C) fungi
D) animals
E) archaea

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Answer:

Option E.

The type of organism that most closely resembles the common ancestor of all life is Archaea.

Explanation:

  • Archaea is the single celled organism having close resemblance to the bacteria in its property of lacking nucleus.
  • However, the other properties of Archaea has a lot of similarity to the eukaryotes.
  • The size and shape of Archaea is more similar to the bacteria. While, the genetic makeup and different metabolic pathways resembles to the eukaryotes especially the enzymes involved in the transcription and translation.
luisvaschetto

The type of organism that most closely resembles the common ancestor of all life is Archaea (Option E).

  • Archaea are unicellular organisms quite similar to bacteria since both are prokaryotes.

  • Archaea are structurally simple microorganisms that live in anoxia conditions and therefore they are obligate anaerobes.

  • These conditions (anoxia conditions) are believed to be the conditions of the primitive Earth.

In conclusion, the type of organism that most closely resembles the common ancestor of all life is Archaea (Option E).

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