well the nucleus is connected to the rough er
Well ribosomes are connected to the rough endoplasmic recticulum but however they aren't on the smooth endoplasmic recticulum (hence the "smooth")
The rough and smooth endoplasmic reticulum are connected to the nuclear envelope, which surrounds the cell nucleus. The rough ER is involved in protein synthesis, while the smooth ER is responsible for lipid synthesis and detoxification. This connection is vital for the proper functioning of the cell.
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