Question

studying a picture of a cell taken with an electron microscope, you find that the cell has no nucleus and no mitochondria, but is does have a plasma membrane and a cell wall. you conclude that the cell is probably from a(n) (2pts)
a bacteria
b extinct organism
c plant
d animal

Explanation:

• Bacteria are prokaryotes. Prokaryotic cells have no nucleus and no membrane - bound organelles like mitochondria. They do have a plasma membrane and many bacteria have a cell wall.
• Animal cells (eukaryotic) have a nucleus and mitochondria. Plant cells (eukaryotic) have a nucleus, mitochondria, and a cell wall. Extinct organisms (if eukaryotic) would also have had a nucleus (assuming they were at least as complex as modern eukaryotes in cell - structure terms).

Answer:

A. bacteria