Which of the following structures is present in both prokaryotic and eukaryotic cells?
A. Golgi apparatus
B. Cell membrane
C. Endoplasmic reticulum
D. Chloroplast
I think B
. Cell membrane is the correct answer.
You are correct! The structure that is present in both prokaryotic and eukaryotic cells is the cell membrane.
To arrive at this conclusion, we can compare the characteristics of prokaryotic and eukaryotic cells. Prokaryotic cells are generally smaller and simpler than eukaryotic cells, lacking membrane-bound organelles. On the other hand, eukaryotic cells are typically larger and more complex, containing membrane-bound organelles.
Out of the options given, the cell membrane is found in both types of cells. The cell membrane is a thin, flexible barrier that surrounds and encloses the contents of the cell, separating the internal environment from the external environment. It acts as a protective barrier, regulates the movement of substances in and out of the cell, and plays a role in communication and cell recognition.
Therefore, the answer is B, the cell membrane.