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.

Planctomycetes challenge our concept of the bacterial cell and of a prokaryote as a cell structure type, as well as our ideas about origins of the eukaryote nucleus. Planctomycetes Are Important for ...

Eukaryotes—fungi, plants, us—are complex. Our large cells are characterized by their different compartments, many of which are neatly enclosed within a boundary of membrane. These compartments contain ...

Scientists have found a microbe that does something textbooks say is impossible: It's a complex cell that survives without mitochondria. Mitochondria are the powerhouses inside eukaryotic cells, the ...

The origin of complex cells started without oxygen, new research suggests. Since the 1960s, many experts have argued that the emergence of eukaryotes (cells containing a clearly defined nucleus) ...

Organelles continue to thrive after the cells within which they exist die, scientists have found, overturning previous assumptions that organelles decay too quickly to be fossilized. Organelles ...

More than 1.5 billion years ago, a momentous thing happened: Two small, primitive cells became one. Perhaps more than any event—barring the origin of life itself—this merger radically changed the ...

In the beginning, there was boredom. Following the emergence of cellular life on earth, some 3.5 billion years ago, simple cells lacking a nucleus and other detailed internal structure dominated the ...

The origin of complex cells started without oxygen, new research suggests. Since the 1960s, many experts have argued that the emergence of eukaryotes (cells containing a clearly defined nucleus) ...