In order to carry out the functions of life, organisms must

to carry out all necessary functions

be able to carry out all of the functions necessary for life in order for the organism to survive.

Explanation:

The one cell of a unicellular organism must be able to perform all the functions necessary for life. These functions include metabolism, homeostasis and reproduction. Specifically, these single cells must transport materials, obtain and use energy, dispose of wastes, and continuously respond to their environment.