Question #b995b
1 Answer
The original prokaryotic autotrophic and heterotrophic cells on early Earth were absorbed by other cells which became internal structures or organelles and evolved into first eukaryotic cells.
Explanation:
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The mitochondria and chloroplasts have DNA inside them and also have membrane bound organelles. This identifies that the organelles must have come from pre-existing cells with nucleic acid and a phospholipid bilayer.
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The photosynthetic material inside the prokaryotic autotrophic cell gave the chloroplast the function of a photosynthetic organelle.
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The material inside the prokaryotic heterotrophic cell, gave the mitochondria the function of a aerobic respiration.
