The stage during which the cell carries out cell functions is called

Interphase

Explanation:

During this phase, the cell obtains nutrients and metabolizes them, grows, reads it's DNA and conducts it's normal cell functions. This stage is also referred to as the resting stage of cells

During interphase, the cell copies DNA in preparation for mitosis. Interphase is the daily living or metabolic phase of the cell, obtains nutrients and metabolizes them, grows, reads its DNA and conducts other normal cell functions. This phase was formerly called the resting phase.