Which of the Following is Not an Organelle

Question

Which of the following is not an organelle?
A) Mitochondria
B) Chloroplast
C) Nucleus
D) Plasma membrane
E) Golgi complex

Accepted Answer

The plasma membrane is not an organelle but a biological membrane that separates the interior of all cells from the outside environment, which is a fundamental structure for all living cells, not a specialized structure within the cell like an organelle.