【Our Body is A collection of 「cells」】
2023-10-01
The smallest unit that makes up an organism's body is called a cell. Cells can be unicellular or multicellular, and humans, animals and plants are generally multicellular.
Humans are made up of approximately 60 trillion cells. The smallest cell is the sperm, which is approximately 2.5 μm, and the largest cell is the sciatic nerve cell, which is approximately 1m long.
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