Question

A ___ is the smallest unit of life that has a definite structure and performs a specific function.

Answer 1

Cell:

1. Cells are the building blocks of living organisms.
2. Hence they are considered as the structural and functional unit of living forms.
3. Cells have a definite structure and perform specific functions.

Final answer: A cell is the smallest unit of life that has a definite structure and performs a specific function.