Final answer:
The main function of a cell is to carry out basic life processes that allow the body to survive. This includes getting energy from food, growing and dividing, and responding to the environment.
Step-by-step explanation:
The main function of a cell is to carry out basic life processes that allow the body to survive. This includes getting energy from food, growing and dividing, and responding to the environment. Cells have different structures and functions depending on their type. For example, nerve cells have long projections to carry electrical messages, while muscle cells have many mitochondria for energy.