Question 4

Both prokaryotic and eukaryotic cells possess a cell membrane.

Both prokaryotic and eukaryotic cells have a cell membrane that serves as a barrier, regulating the movement of substances in and out of the cell.

A) Prokaryotic cells only

This option is incorrect because while prokaryotic cells do have a cell membrane, they are not the only type of cells that possess this structure. Eukaryotic cells also have cell membranes, making this statement incomplete.

B) Eukaryotic cells only

This option is also incorrect as it suggests that only eukaryotic cells have a cell membrane. However, prokaryotic cells, such as bacteria, also possess cell membranes, making this answer insufficient.

C) Both prokaryotic and eukaryotic cells

This option is correct since it acknowledges that both prokaryotic and eukaryotic cells possess a cell membrane. This membrane is essential for maintaining cellular integrity and facilitating communication with the external environment.

D) None of the above

This option is incorrect because it asserts that no cells possess a cell membrane, which is false. Both prokaryotic and eukaryotic cells indeed have cell membranes, making this statement inaccurate.

Conclusion

The correct answer is C because it accurately reflects the fact that both prokaryotic and eukaryotic cells possess a cell membrane, which is crucial for cellular function. All other options fail to recognize the presence of cell membranes in one or both cell types, thus leading to incorrect conclusions.