A cell is enclosed by a thin outer layer called the Cell membrane.
It is also known as the plasma membrane which forms the outer covering of an animal cell.
It regulates the movement of molecules inside and outside of the cell.
In- plant cell it is found within the cell wall.
The whole fluid present inside plasma-membrane isprotoplasm.
Mitochondria is a semi-autonomous organelle and called the powerhouse of the cell
The energy in mitochondria is stored in the form ofATP