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The NUCLEUS of a cell is best described as the cell's:

AControl centre, containing DNA and directing activities
BPower plant, generating energy through respiration
CRecycling unit, breaking down waste molecules
DCommunication highway, transmitting signals across cells
Answer & Solution
Correct answer: A. Control centre, containing DNA and directing activities
The nucleus is the cell's control centre. It contains DNA (organised in chromosomes), is surrounded by a nuclear membrane, and directs all activities (protein synthesis, cell division). The 'power plant' is the mitochondria.
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