A scientist brought back a sample of pond water from a recent expedition to Australia. When she examined the sample under a microscope, she saw a cell she did not recognize, so she began to classify it. She saw that the cell's membrane was surrounded by a cell wall and that the cytoplasm contained plastids and large vacuoles.
Which type of cell did the scientist find?
A. a prokaryotic plant cell
B. a eukaryotic plant cell
C. a eukaryotic animal cell
D. a prokaryotic animal cell
