Final answer:
The organelle considered a protein-factory is the ribosome. Ribosomes are small structures found in practically every cell, responsible for protein synthesis. They play a vital role in building proteins, which serve various functions in the body.
Step-by-step explanation:
The organelle considered a protein-factory is the ribosome.
Ribosomes are small structures found in practically every cell, responsible for protein synthesis. They consist of large and small subunits made of ribosomal proteins and ribosomal RNA. Ribosomes can be found freely in the cytoplasm or attached to the endoplasmic reticulum (ER), and they play a vital role in building proteins, which serve various functions in the body.