* Plasma membrane: This is the outer boundary of the cell, controlling what enters and exits.
* Cytoplasm: The gel-like substance that fills the cell and houses the organelles.
* Ribosomes: These are responsible for protein synthesis.
* DNA: The genetic material of the cell. In prokaryotes, it's a single circular molecule. In eukaryotes, it's organized into chromosomes within the nucleus.
Note: While all cells share these basic structures, they differ in their complexity. Eukaryotic cells have a more organized internal structure with membrane-bound organelles like the nucleus, mitochondria, Golgi apparatus, endoplasmic reticulum, etc. Prokaryotic cells lack these specialized compartments.
