Solved UPSC CDS/OTA Question
A solved UPSC CDS/OTA PYQ - decoded step-by-step.
Solve it the standard way once - then learn the shortcut.
Q · Unit of Life: Cellmedium · 45s
Which organelle stores calcium ions and detoxifies drugs?
TopicUnit of Life: Cell
Question Typemultiple choice
Difficultymedium
Marking+1 / −0.33
Test Duration30 min
Step-by-Step Solution
The complete worked solution.
Every step explained - no skipped algebra.
Smooth endoplasmic reticulum synthesizes lipids, stores calcium ions for muscle contraction, and detoxifies xenobiotics using cytochrome P₄₅₀ enzymes.
Final Answer: Option B - Smooth ER