Question

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

Explanation:

To determine the basic unit of structure and function of all living organisms, we analyze each option:

• Mitochondrion: An organelle within a cell, responsible for energy production, not the basic unit of the whole organism.
• DNA: Genetic material, carries instructions but is not the structural and functional unit of the organism.
• Nucleus: A cell organelle that contains genetic material, not the basic unit of the organism.
• Cell: The cell theory states that the cell is the basic unit of structure and function in all living organisms.

Answer:

D. cell