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.

While prokaryotic cells do not have membrane-bound structures, they do have distinct cellular regions (Figure 1). In prokaryotic cells, DNA bundles together in a region called the nucleoid. Primitive ...

Cells are the building blocks of all living organisms. Test your knowledge of the structure of cells in preparation for your National 5 Biology exam. Looking for more cell structure revision? There is ...

Inside every living cell, tiny molecular machines are constantly in motion, shifting shapes, tugging on membranes and ...