Most distinct cell types arise from a single totipotent cell, called a zygote, that differentiates into hundreds of different cell types during the course of development.

Oct 7, 2025 · cell, in biology, the basic membrane-bound unit that contains the fundamental molecules of life and of which all living things are composed. A single cell is often a complete …

Jun 14, 2025 · A cell is the smallest structural and functional unit of an organism, typically microscopic, consisting of cytoplasm and a membrane, and in most cases containing a …

Jul 23, 2025 · Cell is the smallest, fundamental unit of life and is responsible for all life's functions. It is the basic biological, structural, and functional components of all living things.

4 days ago · All cells can be sorted into one of two groups: eukaryotes and prokaryotes. A eukaryote has a nucleus and membrane-bound organelles, while a prokaryote does not. …

There is no such thing as a typical cell but most cells have chemical and structural features in common. This is very important from the point of view of cell and molecular biology.

All cells evolved from a common ancestor and use the same kinds of carbon-based molecules. Learn how cell function depends on a diverse group of nucleic acids, proteins, lipids, and sugars.

Feb 22, 2021 · Human cells contain the following major parts, listed in alphabetical order: Within cells, the cytoplasm is made up of a jelly-like fluid (called the cytosol) and other structures that …

Oct 15, 2025 · Cells are the basic units of life. The body contains trillions of cells, which vary widely in size, number, structure, and function. Cells also communicate with each other. …

Oct 18, 2025 · Cell theory, fundamental scientific theory of biology according to which cells are held to be the basic units of all living tissues. First proposed by German scientists Theodor …