Dec 1, 2025 · A cell, in biology, is the basic membrane-bound unit that contains the fundamental molecules of life and of which all living things are composed. A single cell may be a complete …

Eukaryotic cells contain other membrane-bound organelles such as mitochondria, which provide energy for cell functions, and chloroplasts, in plants that create sugars by photosynthesis. …

Feb 22, 2021 · What is a cell? Cells are the basic building blocks of all living things. The human body is composed of trillions of cells. They provide structure for the body, take in nutrients …

1 day ago · A cell is the basic building block of living things. All cells can be sorted into one of two groups: eukaryotes and prokaryotes. A eukaryote has a nucleus and membrane-bound …

Apr 7, 2025 · Cells are the fundamental building blocks of all living organisms, from the tiniest bacteria to the tallest trees and the most complex human beings. These microscopic entities, …

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.

Inside the cell Most cells contain functional structures called organelles. They carry out important tasks like making proteins, processing chemicals and generating energy. At the centre of the …