Learn about the ultrastructure and organelles of animal, plant, fungal and bacterial cells. BBC Bitesize Scotland revision for SQA National 5 Biology.

Find out how vesicles function in the body and what the five main types of vesicle are. We also discuss how vesicles interact with other cells and pathogens.

What is a eukaryote? 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 ...

What makes MRK’s images so compelling is the way they make cell biology seem less abstract. Instead of brightly colored diagrams, we get sweeping vistas of the cell and components that look very ...

What is a prokaryotic cell? Prokaryotes are small, single-celled organisms with a simple structure. Unlike other cells, they don’t have a nucleus or other membrane-bound organelles. Instead, most ...

Eukaryotes and prokaryotes 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.

Yale researchers and their colleagues in Hungary have discovered that cells in the hypothalamus — an area of the brain that controls functions like hunger and body temperature — play a major role in ...

It's no coincidence that our bodies feel a little creakier as we age. The trillions of cells that make up our skeleton age too, and some change in ways that weaken the very structure of our bones.