On the animal cell, the function of the small and dark organelles labeled E is that they assemble amino acids into proteins.
The part of the animal cell labelled E is called a ribosome which has the role in the protein synthesis.
The messenger RNA that contained within the ribosome would be the one that assemble amino acids into proteins depending on what the body needs.
In conclusion, the function of the small and dark organelles labeled E is that they assemble amino acids into proteins.
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