Q. Nissl granules present in neurons are made up of?
Answer: ribosome
Notes: Nissl granules consist of rough endoplasmic reticulum, a collection of parallel, membrane-bound cisternae studded with ribosomes on the cytosolic surface of the membranes.

This question is part of 40000+ General Studies MCQ Series Course on GKToday Android app. Question Number: 21 in 28. Human Body - Brain & Nervous System in above course in App.