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.