Cells involved in active protein synthesis have-: (A) Increased mitochondria, (B) Increased Rough Endoplasmic reticulum, (C) Increased golgi apparatus, (D) Increased lysosomes
Answer is B. In Rough endoplasmic reticulum, ribosomes are attached. Protein synthesis can occur in ribosomes and mitochondria. So the answer to this question would be rough endoplasmic reticulum.