Written by the Fiveable Content Team • Last updated September 2025
Written by the Fiveable Content Team • Last updated September 2025
Definition
Microtubules are tube-shaped structures within the cell that are made up of protein subunits called tubulin. They provide structural support, aid in cell division, and facilitate intracellular transport.
Related terms
Tubulin: The protein building block that polymerizes to form microtubules, essential for their structure and function.