A ribosome bound to the endoplasmic reticulum is involved in translating a new protein. the final destination of that new protein may be Lysosome.
Ribosomes, which are tiny, elongated organelles with a round shape, are found on the rough endoplasmic reticulum and are responsible for producing those proteins. When such proteins are produced incorrectly, they can occasionally remain inside the endoplasmic reticulum. While fixed ribosomes are anchored to the rER, free ribosomes are found in the cytosol and can roam around the cell. Proteins created by free ribosomes are released into the cytosol and utilized by the cell.
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