what is cell??describe it???
Answers
Answer:
the smallest structural and functional unit of an organism, which is typically microscopic and consists of cytoplasm and a nucleus enclosed in a membrane is called cell
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Answer:
A Cell is the structural and functional unit of body.
Cell
BIOLOGY
WRITTEN BY: Christopher ChowRonald A. LaskeyL. Andrew StaehelinBruce M. AlbertsMerton R. BernfieldJohn A. Cooper …See All Contributors
LAST UPDATED: Nov 18, 2019 See Article History
Alternative Title: cell system
ARTICLE CONTENTS
cell: cell as basic unit of life
cell: cell as basic unit of life
Cells are the basic units of life.
Encyclopædia Britannica, Inc.
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 organism in itself, such as a bacterium or yeast. Other cells acquire specialized functions as they mature. These cells cooperate with other specialized cells and become the building blocks of large multicellular organisms, such as humans and other animals. Although cells are much larger than atoms, they are still very small. The smallest known cells are a group of tiny bacteria called mycoplasmas; some of these single-celled organisms are spheres as small as 0.2 μm in diameter (1μm = about 0.000039 inch), with a total mass of 10−14 gram—equal to that of 8,000,000,000 hydrogen atoms. Cells of humans typically have a mass 400,000 times larger than the mass of a single mycoplasma bacterium, but even human cells are only about 20 μm across. It would require a sheet of about 10,000 human cells to cover the head of a pin, and each human organism is composed of more than 30,000,000,000,000 cells.
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