Which one of the following is not considered as a part of the endomembrane system?

Which one of the following is not considered as a part of the endomembrane system?
A Vacuole
B Lysosome
C Golgi complex
D Peroxisome

Detailed Solution

The endomembrane system consists of the organelles whose functions are coordinated: endoplasmic reticulum, Golgi complex, lysosomes and vacuoles.
The functions of mitochondria, chloroplasts and peroxisomes are not coordinated with these components, so they are not considered part of the endomembrane system.
Peroxisomes are microbodies; their proteins are made on free ribosomes and they are not formed from the ER–Golgi pathway.
Hence the peroxisome is not a part of the endomembrane system.

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