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Biology Question 108 – NEET-UG 2026

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Endomembrane system includes

Recall the definition and primary function of the endomembrane system in eukaryotic cells.

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Ninja Strategy•Organelle Classification

Quickly identify the organelles that are definitively NOT part of the endomembrane system (mitochondria, chloroplasts, peroxisomes) and eliminate any options containing them.

Step 1: Define the Endomembrane System✦ Active

The endomembrane system is a collection of membranes and organelles in eukaryotic cells that work together to modify, package, and transport lipids and proteins.

Step 2: Identify Components of the Endomembrane System○ Expand

The key components of the endomembrane system include the endoplasmic reticulum (ER), Golgi apparatus (or Golgi complex), lysosomes, and vacuoles. The nuclear envelope is also often considered part of this system.

💡 Teacher's Secret Hint

Remember that organelles like mitochondria, chloroplasts, and peroxisomes are NOT part of the endomembrane system.

Step 3: Evaluate Options and Select the Correct Answer○ Expand

Organelles like mitochondria, chloroplasts, and peroxisomes are not considered part of the endomembrane system because they do not originate from the ER or exchange membranes with other endomembrane components. - Option (1) lists endoplasmic reticulum, Golgi complex, lysosomes, and vacuole, all of which are part of the endomembrane system. - Options (2), (3), and (4) include chloroplasts, peroxisomes, and/or mitochondria, which are not part of the endomembrane system. Therefore, option (1) is the correct answer.

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