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.
Keep practising The Fundamental Unit of Life
Browse all The Fundamental Unit of Life questions for CBSE Class 9, or explore more Science topics.
Related questions
Match each genetic terminology with its definition:Match each chromosome component with its structural description:Match each mitotic phase with its key microscopic hallmark:Match each type of cell division with its biological purpose:Pick the right answer, quicklyOrder a plant cell losing waterSpot the one that does not fitFill the gaps on the cell