Question

question 3
which of the following does not exist in a prokaryotic cell?
ribosomes
dna
a plasma membrane
mitochondria

Explanation:

Prokaryotic cells are simple cells without membrane - bound organelles. Ribosomes are present for protein synthesis. DNA is present as the genetic material. The plasma membrane encloses the cell. Mitochondria are membrane - bound organelles (for energy production in eukaryotes) and do not exist in prokaryotes.

Answer:

mitochondria