Here's why:

* Energy Production: Cellular respiration is the primary process by which eukaryotic cells generate ATP, the energy currency of the cell. All cells need energy to perform their vital functions.

* Mitochondria: Eukaryotic cells possess mitochondria, the organelles where most of the reactions of cellular respiration take place. These organelles are essential for energy production.

* Exceptions: There are some rare exceptions, like certain parasitic organisms that may have reduced or absent mitochondria. However, these are specific cases, and most eukaryotic cells require cellular respiration for survival.

Therefore, it's safe to say that cellular respiration is a fundamental process in all eukaryotic cells.