Cells get energy by breaking down food molecules. The process of breaking down food to restore energy to the cells is called Cellular Respiration.
The best answer would be:
Osteoarthritis
<span>It is when the person experiences too much weight bearing activities, which may cause the wear and tear breakdown of the joints. This worn bone may be a foreign material when identifying the joint erosion.</span>
No you can't. A beaker is used for chemicals etc.
That they don't have a nucleus.