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Which organelle is known as the 'powerhouse of the cell'?
- Nucleus
- Ribosome
- Mitochondria
- Golgi apparatus
Answer: Mitochondria
Mitochondria generate ATP through cellular respiration (Krebs cycle, ETC). They have their own DNA and ribosomes, supporting endosymbiotic theory. Fundamental cell biology concept. [[NCERT Biology Class 11]]