The Cell Concept: Principles, History, and Modern Refinements Cell theory Overview of the cell concept: core principles, 17th–19th century history, and modern molecular refinements explaining cell types, division, genetics, and exceptions like viruses.
Centriole A centriole is a small, cylindrical cellular organelle made of microtubules that helps organize cell division and forms basal bodies for cilia and flagella in many eukaryotes.
Centromere Specialized chromosome region that forms the kinetochore, holds sister chromatids together and ensures correct segregation of genetic material during cell division.
