The cell is a functional unit of living organisms because
-
A.
multicellular organisms are made up of cells -
B.
all cells in a multicellular organism function as a single cell -
C.
the function of a multicellular organism is the sum total of the functions of its constituent cells -
D.
the function of a single cell is superior to that of the multicellular organism -
E.
the cells of a multicelullar organism are similar in structure