Question

mention any 3 difference between a living cell and a brick in a wall

Answer 1

A cell is living whereas a brick is non-living.

A cell exchanges materials with its neighbouring cells and environment. No such exchange occurs between the bricks.

A cell requires a continuous source of energy for its functioning. Bricks do not need energy.

A cell has a specific life span. They will grow, reproduce and die. No such processes are shown by bricks.

                         or in easy language 1. Living cell can divide but not a brick 
2. A living cell has nucleus whereas a brick doesn't
3. A living cell has mitochondria whereas a brick doesn't have