The correct answer is: B. Nuclear membrane
Prokaryotic cells are the simplest type of cell, and they lack a nucleus. This means that their DNA is not contained within a membrane-bound nucleus, but rather is found in the cytoplasm of the cell. Eukaryotic cells, on the other hand, do have a nucleus. Their DNA is contained within a membrane-bound nucleus, which helps to protect it from damage and to regulate its expression.
A. DNA is found in both prokaryotic and eukaryotic cells. It is the genetic material of the cell, and it contains the instructions for how the cell should function.
C. Cell organelles are found in eukaryotic cells, but not in prokaryotic cells. Cell organelles are specialized structures that carry out specific functions within the cell. For example, mitochondria are responsible for producing energy, and ribosomes are responsible for protein synthesis.
D. RNA is found in both prokaryotic and eukaryotic cells. It is a nucleic acid that is involved in the process of protein synthesis.