Also called freight ton . a unit of volume for freight that weighs one ton, varying with the type of freight measured, as 40 cubic feet of oak timber or 20 bushels of wheat. 3. metric ton. 4. displacement ton. 5. a unit of volume used in transportation by sea, commonly equal to 40 cubic feet (1.13 cu. m).
When in a biological process, less specialized cells evolves into more specialized ones, the process is called as cell differentiation. This process is mostly seen in multicellular organisms.
Cellular respiration is a chemical reaction that allows cells to convert food energy into chemical energy. All organisms perform some form of cellular respiration, because without the correct form of chemical energy, cells can't perform work to sustain life.