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, and lysosomes.

A new study challenges a popular scenario put forward to explain the arrival of the first eukaryotic organisms. In the beginning, there was boredom. Following the emergence of cellular life on earth, ...

Elizabeth Kellogg, PhD, St. Jude Department of Structural Biology, used cryo-EM to study the evolutionary journey of Fanzor2, a compact eukaryotic genome-editing protein with huge potential. (MEMPHIS, ...

For billions of years after the origin of life, the only living things on Earth were tiny, primitive cells resembling today’s bacteria. But then, more than 1.5 billion years ago, something remarkable ...

In many submerged regions, murky mud shelters strange life-forms that seem to be the key to one of the biggest mysteries of life on Earth. These creatures belong to a domain of life called the archaea ...

Expansion microscopy image of Lacrymaria, a ciliated eukaryotic microorganism, collected from environmental samples in Tokyo. Highlighted in green is tubulin, the major protein component of ...