Final answer:
ATP hydrolysis by a tubulin heterodimer is important for controlling the growth of a microtubulin.
Step-by-step explanation:
The statement that ATP hydrolysis by a tubulin heterodimer is important for controlling the growth of a microtubulin is True.
Microtubules are composed of polymerized tubulin dimers, and the process of ATP hydrolysis by the tubulin heterodimer is essential for the dynamic behavior of microtubules. When ATP is hydrolyzed, it provides the energy required for microtubule assembly and disassembly, which allows for the regulation of microtubule growth and organization.