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The Cell › ViewIt is an isolated region where the DNA resides in eukaryotic cells. It is bordered by a double membrane referred to as the nuclear envelope. What is the name of this structure?
A. cytoplasm
B. nucleus
C. cell membrane
D. mitochondria
The Cell › View
Which of the following is Not a principle of cell theory?
A. all cells come from pre-existing cells.
B. cells are the smallest units of life
C. all organisms are composed of one or more cells
D. all cell are able to divide.