explain why ribosomes are called protein factories
1) Because the proteins are manufactured in the ribosomes, hence, these are called protein factories. The proteins are made up Amino acids(smaller units). The structure of protein differes from individual to individual. 2) Ribosomes have a role in forming polypeptide chains, which are or combine to form proteins.i dud, Ribosomes are called protein factory of the cell Because the proteins are manufactured in the ribosomes, hence, these are called protein factories. The proteins are made up Amino acids(smaller units).