This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: None, Subject name: Biochemistry
Endoplasmic reticulum is not involved in ? 
Select and explain. 
A. Protein synthesis, B. Steroid synthesis, C. DNA synthesis, D. Triglyceride synthesis
C: DNA synthesis
Answer: C: DNA synthesis 
Explanation: Ans. is 'c' i.e., DNA synthesis Endoplasmic reticulum are involved in :-Rough ER : Protein synthesis (hormones, enzymes etc.)Smooth ER: Triglyceride synthesis, steroid synthesis, cholesterol synthesis, Phospholipid synthesis, fatty acid chain elongation.