Each of the Following Organelles is Part of the Endomembrane

Question

Each of the following organelles is part of the endomembrane system except
A)the peroxisome.
B)the Golgi complex.
C)the smooth endoplasmic reticulum.
D)the endosome.
E)the rough endoplasmic reticulum.

Accepted Answer

The peroxisome is not part of the endomembrane system. The endomembrane system includes the Golgi complex, smooth and rough endoplasmic reticulum, and endosomes, but peroxisomes are single-membrane organelles that are involved in catabolism of very long chain fatty acids, branched chain fatty acids, D-amino acids, and polyamines, synthesis of plasmalogens, etherphospholipids critical for the normal function of mammalian brains and lungs. They are not derived from the endoplasmic reticulum nor do they interact with the ER-Golgi system in the same way other endomembrane components do.