Cell structure and function

This document discusses the structure and function of cells. It begins by establishing that the cell is the fundamental unit of life, and that all organisms are composed of one or more cells. It then describes the basic components of cells, including the plasma membrane, region containing DNA, cytoplasm, and biochemical molecules/pathways. The document goes on to classify the two main types of cells - prokaryotic and eukaryotic - and different kingdoms within each type. Specific structures within plant and animal cells are also outlined, such as organelles like mitochondria, nucleus, Golgi apparatus, lysosomes, endoplasmic reticulum, and chloroplasts in plant cells.