You view a group of cells underneath an electron microscope. Immediately, you identify the cell membrane and mitochondria. What can you conclude about these cells?
A.
They are animal cells because they contain mitochondria.
B.
They are animal cells because they contain a cell membrane.
C.
They are plant cells because they contain a cell membrane.
D.
You cannot conclude that they are plant or animal cells. Both types of cells contain both a cell membrane and mitochondria.