Solved UPSC CDS/OTA Question
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Q · Unit of Life: Cellmedium · 45s
Which process moves molecules from an area of higher concentration to lower concentration without energy?
TopicUnit of Life: Cell
Question Typemultiple choice
Difficultymedium
Marking+1 / −0.33
Test Duration30 min
Step-by-Step Solution
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Diffusion is the passive movement of molecules down their concentration gradient across membranes or in fluids, requiring no energy or transport proteins.
Final Answer: Option C - Diffusion