Question

Which of the following is not a component of the

endomembrane system?

a. mitochondrion

b. Golgi apparatus

c. endoplasmic reticulum

d. lysosome

Short answer

Mitochondrion is not a component of endomembrane system.

Step-by-step solution

Explanation

Golgi apparatus is an endomembrane that helps in the processing and packaging of protein and lipid molecules. So, option b is wrong.

The endoplasmic reticulum is responsible for the production, processing, and packaging of protein, hence is an endomembrane. So, option c is wrong as well.

Lysosomes are responsible for digestion both in the intracellular and extracellular of the cell, as well as bodily defense and autophagy. Option d is wrong too.

The Endomembrane system is a collection of organelles that work together for transportation and packaging, as mitochondria help in cellular respiration hence is not an endomembrane. Thus, option a is correct.

Conclusion

Mitochondria is not a component of endomembrane system as they do not perform coordinated function of transportation and packaging.