This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: General physiology, Subject name: Physiology
True about Nissl granule 
Select and explain. 
A. Involves in RNA synthesis, B. Present in axon, C. Involves in protein synthesis, D. Structurally they are endoplasmic reticulum
C: Involves in protein synthesis
Answer: C: Involves in protein synthesis 
Explanation: Nissl granules are organelles containing ribosome . They synthesis the protein necessary for neuron. (REF: TEXTBOOK OF MEDICAL PHYSIOLOGY GEETHA N 2 EDITION, PAGE NO - 20)