The Endomembrane System · NCERT Biology

Which organelle modifies proteins by adding carbohydrate groups?

  1. Rough ER at ribosomes
  2. Smooth ER for lipids
  3. Golgi apparatus via glycosylation
  4. Lysosome during degradation
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Correct answer: Golgi apparatus via glycosylation

The Golgi apparatus performs glycosylation — adding carbohydrate groups to proteins. This modification is crucial for proper protein function, targeting, and cell-surface recognition.

Difficulty: Medium Question 19 of 20

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