alleryStart learning →Which structure is not part of the endomembrane system?
AThe Golgi apparatus
BThe plasma membrane
CThe nuclear envelope
DThe mitochondrion
Answer & Solution
Correct answer: D. The mitochondrion
1. The endomembrane system includes the nuclear envelope, lysosomes, vesicles, the endoplasmic reticulum and the Golgi apparatus.
2. The plasma membrane is counted in as well, even though it lies at the cell boundary.
3. The system does not include the membranes of either mitochondria or chloroplasts.
4. The mitochondrion is therefore the structure left out.
_Source: OpenStax Biology (1st ed., CC BY 4.0), Ch 4 "Cell Structure", section 4.4 The Endomembrane System and Proteins_
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