Final answer:
Microtubules in cells play a role in cell division, cell movement, and transportation of vesicles, but they are not involved in cellular respiration, which is a metabolic process taking place in mitochondria.
Step-by-step explanation:
The functions of microtubules in cells include several critical roles such as aiding in cell division, providing structural support for cell movement, and serving as tracks for motor proteins that transport vesicles. Specifically, during cell division, microtubules form structures that ensure each daughter cell receives the correct set of chromosomes by pulling the replicated chromosomes to opposite ends of the dividing cell. They are also the structural components of centrioles, flagella, and cilia, which are essential for cellular movement.
However, among the options given—Cell Division, Cell Movement, Cell Signaling, and Cellular Respiration—the one function that microtubules do not have is Cellular Respiration. Cellular respiration is a metabolic process that occurs within cell organelles known as mitochondria and does not directly involve the structural framework provided by microtubules.