Final answer:
Plasma cells have abundant RER (rough endoplasmic reticulum) and a well-developed Golgi apparatus to efficiently produce and secrete antibodies, making it true that they possess these extensive cellular structures.
Step-by-step explanation:
It is true that plasma cells have abundant RER (rough endoplasmic reticulum) and a well-developed Golgi apparatus. Plasma cells are specialized white blood cells that secrete antibodies, which are proteins. Due to this function, plasma cells require extensive machinery to produce and process proteins efficiently. The RER's primary role in these cells is to synthesize proteins, often antibodies. The ribosomes studding the RER synthesize these proteins, which subsequently enter the RER lumen and may undergo structural changes such as folding or the addition of side chains. Once synthesized and modified, these proteins are encapsulated in transport vesicles that bud off the RER and are transported to the Golgi apparatus.
The Golgi apparatus functions to further modify, sort, tag, and package these proteins for secretion or incorporation into cell membranes. In plasma cells, the abundant RER and a well-developed Golgi apparatus work in tandem to ensure efficient production and secretion of antibodies, underscoring the importance of these organelles in protein-secreting cells.