**Question:** All the following criteria present in cell cerebellum except

A. Mitochondria
B. Ribosomes
C. Golgi apparatus
D. Lysosomes

**Core Concept:** The cerebellum is a part of the brain involved in motor coordination, balance, and learning of motor skills. It is composed of various cell types, including neurons and glial cells.

**Why the Correct Answer is Right:** The correct answer is D. Lysosomes, which are organelles involved in cellular digestion and waste disposal, are not present in neurons of the cerebellum.

**Why Each Wrong Option is Incorrect:**

A. Mitochondria: These are the energy-producing organelles in neurons, essential for cellular function and survival. They are present in the cerebellum neurons.
B. Ribosomes: These are the sites of protein synthesis in neurons, contributing to the functional proteins needed by the cell. They are also present in cerebellum neurons.
C. Golgi apparatus: This organelle is responsible for modifying and transporting proteins synthesized in the ribosomes to various cellular destinations, including the neuronal cell membrane. It is present in neurons of the cerebellum.

**Clinical Pearl / High-Yield Fact:** The cerebellum is composed of two main cell types: Purkinje cells and granule cells. Both types of neurons contain mitochondria, ribosomes, and the Golgi apparatus, which is essential for protein synthesis, modification, and transport in these cells.

**Correct Answer:** C. Golgi apparatus

In the context of the cerebellum, all other organelles (mitochondria, ribosomes) and cell types (Purkinje cells, granule cells) are present, but the Golgi apparatus is specific to Purkinje cells and not present in granule cells.