tissues -> cells -> organ systems -> organs cells -> tissues -> organs -> organ systems organs -> organ systems -> cells -> tissues organ systems -> organs -> tissues -> cells
I gave my students this multiple choice question: Which sequence correctly shows the levels of increasing organization in the human body?

Only one answer is correct among these 4 choices:
- tissues -> cells -> organ systems -> organs
- cells -> tissues -> organs -> organ systems
- organs -> organ systems -> cells -> tissues
- organ systems -> organs -> tissues -> cells

Could you tell me which one is correct?

cells -> tissues -> organs -> organ systems