proteins are synthesised on which sub-cellular structure?

Proteins are synthesised on ribosomes , the sub-cellular structures that act as the cell’s “protein factories.”

Ribosomes can be:

• Free in the cytoplasm, making proteins that stay in the cell.

• Attached to the rough endoplasmic reticulum, making proteins for secretion or for membranes.

In many exam-style biology questions, if you see
“Proteins are synthesised on which sub-cellular structure?”
the expected one-word answer is: ribosomes.

TL;DR: Proteins are synthesised on ribosomes.

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