Prokaryotic Cells - GCSE Biology Definition

Prokaryotic cells are the simplest and most ancient type of cells. Unlike eukaryotic cells, they do not have a nucleus or other membrane-bound organelles. Their DNA is found free in the cytoplasm, in a region called the nucleoid. Prokaryotic cells are usually smaller and less complex than eukaryotic cells and include bacteria and archaea. They often have a cell wall for shape and protection. Understanding prokaryotic cells is important in GCSE Biology because they help us explore the diversity of life and play key roles in processes like fermentation and decomposition.