Question

Why are ribosomes present in ER and Mitochondria

Answer 1

≈≈> Polypeptide chains that are made on the rough ER (discussed below) are inserted directly into the ER and then are transported to their various cellular destinations. Ribosomes on the rough ER usually produce proteins that are destined for the cell membrane.

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Answer 2

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Response. In eukaryotic cells, 80 S ribosomes(organelles) are attached to rough endoplasmic reticulum(RER) which is an organelle. ... Thus ribosomes are called organelles within organelle.

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