An unknown cell is observed using a microscope. A cell wall, ribosomes and DNA are identified. What can be concluded from these observations?

A.    It can only be a prokaryotic cell.
B.    It can only be a eukaryotic cell.
C.    It could be a prokaryotic or eukaryotic cell.
D.    It can only be a plant cell.

C

This question proved difficult. Many candidates answered the correct option C but many went for D. They seemed to equate the cell wall with only plant cells and did not consider that prokaryote cell walls exist as well.