Question

Which of the following are NOT considered as the part of endomembrane system?

1. Mitochondria
2. Endoplasmic reticulum
3. Chloroplasts
4. Golgi complex
5. Peroxisomes

Choose the most appropriate answer from the options given below:

• A. A, C and E only
• B. A and D only
• C. A, D and E only
• D. B and D only

Answer 1

The Correct Option is A

The question asks which organelles are NOT considered part of the endomembrane system. The endomembrane system is a group of interacting organelles that work together to modify, package, and transport lipids and proteins. It typically includes the endoplasmic reticulum, Golgi complex, lysosomes, vesicles, and the plasma membrane. Let's evaluate each option:

1. Mitochondria: Mitochondria are not part of the endomembrane system. They have a separate function involved in energy production through respiration.
2. Endoplasmic Reticulum: This organelle is a key component of the endomembrane system and is involved in the synthesis and transport of proteins and lipids.
3. Chloroplasts: These are also not part of the endomembrane system. Chloroplasts are mainly involved in photosynthesis in plant cells.
4. Golgi Complex: The Golgi complex is an integral part of the endomembrane system that modifies and packages proteins and lipids for transport.
5. Peroxisomes: Peroxisomes are not considered part of the endomembrane system. They are primarily involved in the breakdown of fatty acids and detoxification of harmful substances.

Based on the above evaluations, the components that are NOT part of the endomembrane system are Mitochondria, Chloroplasts, and Peroxisomes.

The correct answer is A, C, and E only.