Since plasma cells make your antibodies, they need to produce a lot of protein. Also because the nucleus makes a lot of products to make proteins you need a large Golgi Body. How ER's relate to this: to do protein synthesis you need ribosomes and to have ribosomes you need the rough ER!
Answer:Within the cell, the endoplasmic reticulum synthesizes lipids and proteins. ... Proteins that are made in the cell for use by the cell-for instance, as channels in the plasma membrane-are made by the free ribosomes that dot the cytoplasm. Two types of endoplasmic reticulum are found in the eukaryotic cell.
Plasma cells have a well-developed rough endoplasmic reticulum (RER) with many ribosomes because they need to produce large quantities of antibodies. The ribosomes on the RER synthesize these proteins, which undergo modifications in the ER before being secreted. This structure allows plasma cells to fulfill their crucial role in the immune system effectively.
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