Which of the Following Organelles is Not Part of the Endomembrane

Question

Which of the following organelles is not part of the endomembrane system?
A)ribosome
B)endoplasmic reticulum
C)Golgi apparatus
D)lysosome
E)secretory vesicle

Accepted Answer

The ribosome is not part of the endomembrane system; it is involved in protein synthesis but is not an organelle enclosed by a membrane like the others listed.