Answer:
Each cell has a unique chemical composition
Explanation:
All the other answers are apart of the modern cell theory.
Embryonic stem cells have the potential to produce regenerated tissues, such as skin. They could provide means of healing diseases such as type 1 diabetes where a particular cell has been lost or is malfunctioning.
Epithelial tissue <span>covers the body surface and forms the lining for most internal cavities. </span>
It is Convergent evolution
