In addition to the nucleus, eukaryotic cells may contain several other types of organelles, which may include mitochondria, chloroplasts, the endoplasmic reticulum, the Golgi apparatus ...

Aa Aa Aa What variety is there in mitochondria? Mitochondria occur in various forms across various eukaryotic groups, yet considerations on the origin of mitochondria sometimes neglect this ...

Bacteria are amongst the simplest of organisms – they are made of single cells. Their cell structure is simpler than the cells of animals, plants and fungi.