Multiple choice

The main controlling centre of the cell is

  1. nucleus

  2. mitochondria

  3. ribosome

  4. endoplasmic reticulam
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A Correct answer
Explanation

The nucleus contains the cell's genetic material (DNA) and controls all cellular activities by regulating gene expression. It is often called the cell's 'control center.' Mitochondria produce energy (ATP), ribosomes synthesize proteins, and endoplasmic reticulum processes proteins and lipids, but none direct overall cellular function like the nucleus.

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