Multiple choice

According to the cell theory, all cells come form __________________ cells.

  1. kinesised

  2. brain

  3. dead

  4. pre-existing
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

Cell theory states that all cells arise from pre-existing cells through cell division. This principle, established by Rudolf Virchow in 1855, contradicts the earlier idea of spontaneous generation. Options A, B, and C are scientifically incorrect - cells do not come from kinesised (not a biological term), brain cells, or dead cells.

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