Definition of Cell A cell is the basic structural and functional unit of all living organisms, responsible for various life processes and containing essential biological molecules.
A cell is the smallest unit that is typically considered alive and is a fundamental unit of life. All living organisms are composed of cells, from just one (unicellular) to many trillions (multicellular). Cell biology is the study of cells, their physiology, structure, and life cycle.
A cell is a mass of cytoplasm that is bound externally by a cell membrane. Usually microscopic in size, cells are the smallest structural units of living matter and compose all living things. Most cells have one or more nuclei and other organelles that carry out a variety of tasks.
Cell theory, developed in 1839 by Matthias Jakob Schleiden and Theodor Schwann, states that all organisms are composed of one or more cells, that cells are the fundamental unit of structure and function in all organisms, and that all cells come from pre-existing cells. Organisms are broadly grouped into eukaryotes and prokaryotes.
A cell is a membrane-bound unit that has other cell organelles, which perform different functions. The nucleus present in the between of a cell carries all the genetic information of a cell.
MSN: Cell structure and function for NEET UG 2026: Summary and 10 practice questions
The 'Cell Structure and Function' chapter in Biology is an important topic to revise for students who are planning to appear for the NEET UG 2026 exam, being scheduled in the first week of May 2026.
Cell structure and function for NEET UG 2026: Summary and 10 practice questions