Answer: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.
Explanation:
The structure of each type of human cell depends on what function it will perform. This structure-function relationship can be extended to all other organisms, from the largest whale to the smallest bacteria. The variability between cell function is related to the proteins expressed in a particular type of cell.