User:Troodon

Cells.

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 from food, convert those nutrients into energy, and carry out specialized functions. Cells also contain the body’s hereditary material and can make copies of themselves.

Cells have many parts, each with a different function. Some of these parts, called organelles, are specialized structures that perform certain tasks within the cell. There are two distinct types of cells: prokaryotic cells and eukaryotic cells. A.Prokaryotic Cells prokaryote cells is a single-celled organism that lacks a nucleus, and other membrane-bound organelles. B.Eukaryotic Cells