Here's a breakdown of the main components:

* Organic Molecules:

* Carbohydrates: Provide energy and structural support (e.g., sugars, starches)

* Lipids (fats & oils): Store energy, form cell membranes, and provide insulation (e.g., phospholipids, cholesterol)

* Proteins: Perform a wide variety of functions, including enzymes, structural components, and transport molecules (e.g., enzymes, antibodies)

* Nucleic Acids: Store and transmit genetic information (e.g., DNA, RNA)

* Inorganic Molecules:

* Water: The primary solvent in cells, essential for many chemical reactions

* Inorganic Ions: Play important roles in maintaining pH, nerve impulses, and muscle contraction (e.g., sodium, potassium, calcium)

These molecules are organized into complex structures that make up the different parts of a cell:

* Cell Membrane: The outer boundary of the cell, controlling what enters and leaves

* Cytoplasm: The jelly-like substance that fills the cell, containing organelles

* Organelles: Specialized structures that perform specific functions (e.g., nucleus, mitochondria, ribosomes)

So, while we might say a cell is made of "stuff," that stuff is actually a complex and organized collection of molecules.