What are the eukaryotic cells that don't possess mitochondria?

The mitochondrion, an organelle that helps produce energy for the cell, is only found in eukaryotes, organisms with relatively large, complex cells. Many cells don't have one. Cells with mitochondria contrast with prokaryotes, which lack set, membrane-bound organelles, such as mitochondria. read more

Eukaryotic cells are also a group of unicellular eukaryotic organisms. Some organisms of this group do not have mitochondria and instead have special structures called Hydrogenosmes which serve the function of absent mitochondria by producing ATP. read more

In short, many cells have mitochondria and many don't, and the difference is important. TL;DR (Too Long; Didn't Read) The mitochondrion, sometimes called the "powerhouse of the cell," is common among complex organisms, which use the organelle to convert oxygen into energy. read more

During comparisons between a prokaryotic and an eukaryotic cell, the observer would look for a mitochondrion (if it is an animal cell) or a chloroplast (if it is a plant cell) as one of the indicators. read more