(A)Until the onset of PUBERTY,
Answer:
Potential energy. If its laying on a flat floor and not moving, it has the potential to move. if its rolling it has kentic energy bc it wouldnt have the potential, it would be moving. I hope this helps and good luck :)
Explanation:
Diffusion has a major part in this. It has proteins embedded in it that allow molecules to diffuse in and out of the cell up and down its concentration gradient.
