39. Which statement is one component of the cell theory? A.DNA is the basis of genetic transfer B.All living cells arise from pre-existing cells C.All cells are composed of same organelles D.Tissues are formed from combinations of cells
Answer: Option B Solution: The three parts of the cell theory are as follows: (1) All living things are made up of cells, (2) Cells are the smallest units (or most basic building blocks) of life, and (3) All cells come from pre-existing cells through the process of cell division.
