Specialized structures inside a cell are referred to as organelles.

Here's a breakdown:

* Organelles are like tiny organs within a cell, each performing a specific function.

* They are membrane-bound compartments that carry out essential tasks for the cell's survival and proper functioning.

* Examples include the nucleus, mitochondria, endoplasmic reticulum, Golgi apparatus, lysosomes, and many others.

Think of a cell as a miniature factory, with each organelle representing a specialized department or machine contributing to the overall production.