A eukaryote is any cell or organism that possesses a clearly defined nucleus. Eukaryotic cells form the foundation of complex, multicellular life, including apple trees, mushrooms, fish and humans.

This basic structure of a plant cell is shown below – the same plant cell, as viewed with the light microscope, and with the transmission electron microscope. Animal and plant cells have certain ...

Chromosomal DNA The DNA of bacterial cells is found loose in the cytoplasm. It is called chromosomal DNA and is not contained within a nucleus. Plasmid DNA Bacteria also have small, closed-circles of ...

Some of the body's cells stay put for life, while others are free to roam. To move, these migratory cells rely on ...

The Hemifusome: A Cellular Recycling Center The hemifusome is a tiny, membrane-bound organelle that functions as a recycling center inside cells. Its primary role seems to be in organizing and ...