Respuesta :
Answer:
The answer is Cells.
Explanation:
- The chart is a basic molecular design of multicellular organisms.
- Atoms, molecules, cells, tissues, organs, organ systems are the building blocks of the human body which combine together on the basis of similar function or structure to achieve various body functions.
- Atoms form chemical bonds with other atoms and form molecules.
- Molecules combine together to form cells.
- Cells are the basic functional and structural units of life.
- Cells that perform similar functions combine together to form tissues.
- Two or more kinds of tissues that perform similar functions combine to form organs.
- Organs, in turn, form organ systems such as the respiratory or cardiovascular systems etc.