Why isn't the mitochondrion classified as part of the endomembrane system?
A)It only has two membrane layers.
B)Its structure is not derived from the ER.
C)It has too many vesicles.
D)It is not involved in protein synthesis.
E)It is not attached to the outer nuclear envelope.

Question

Quizplus · Accepted Answer

The endomembrane system is composed of organelles derived from the same membrane-bound compartment, the endoplasmic reticulum (ER), including the Golgi apparatus, lysosomes, endosomes, and nuclear envelope. The mitochondrion, however, is derived from a different origin in the cell's history, and it has its own distinct system of membranes that are not derived from the ER. Therefore, the mitochondrion is not classified as part of the endomembrane system.

Why Isn't the Mitochondrion Classified as Part of the Endomembrane