what is the basic unit of structure and function of all living organisms? mitochondrion dna nucleus cell

Answer

Brief Explanations:

The cell theory states that cells are the basic unit of structure and function in all living organisms. A mitochondrion is an organelle within a cell. DNA is the genetic material found in cells. The nucleus is an organelle within a cell that contains DNA. Only the cell itself is the fundamental unit for both structure and function across all living things.

Answer:

cell