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Match List I with List II. List I: A. Nucleolus; B. Centriole; C. Leucoplasts; D. Golgi apparatus. List II: I. Site of formation of glycolipid; II. Organization like the cartwheel; III. Site for active ribosomal RNA synthesis; IV. For storing nutrients. Choose the correct answer from the options given below:
Nucleolus = rRNA synthesis (III), Centriole = 9+0 cartwheel (II), Leucoplast = storage (IV), Golgi = glycolipids/glycoproteins (I). Match: A-III, B-II, C-IV, D-I!
The nucleolus is a dense membraneless region in the nucleoplasm that serves as the site of active ribosomal RNA (rRNA) synthesis (A -> III).
Centrioles are cylindrical structures made of nine evenly spaced peripheral triplets of tubulin fibrils, arranged like a cartwheel (9+0 pattern) (B -> II).
Leucoplasts are colourless plastids specialized for nutrient storage (C -> IV). Golgi apparatus packages and modifies proteins, serving as the critical site for the formation of glycoproteins and glycolipids (D -> I).
Diagnose every choice: Know exactly why the right option works and why distractors fail.
Assigns cartwheel appearance to nucleolus.
Mismatches centriole with nutrient storage.
Accurately pairs all four organelles/structures with their structural features and functions.
Mismatches nucleolus with glycolipid formation.
Forgetting the 9+0 cartwheel structure of centrioles.
"Nucleolus is a site for active ribosomal RNA synthesis. Both the centrioles in a centrosome lie perpendicular to each other in which each has an organisation like the cartwheel. Golgi apparatus is the important site of formation of glycoproteins and glycolipids."
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