Final answer:
The rough endoplasmic reticulum (RER) functions in protein synthesis with the help of ribosomes, playing a crucial role in cellular processes.
Explanation:
The rough endoplasmic reticulum (RER) is responsible for protein synthesis. The presence of ribosomes on its surface aids in the production of proteins that are essential for various cellular functions. The RER works in coordination with the Golgi apparatus to transport these proteins to their correct locations within the cell.
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