Multiple choice

The human cell, which lacks the nucleus at maturity, is

  1. erythrocyte (RBC)

  2. white blood cell

  3. nerve cell

  4. epithelial cell
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A Correct answer
Explanation

Mature mammalian red blood cells (erythrocytes) lose their nucleus during development to maximize space for hemoglobin, which carries oxygen. This enucleation is unique among human cells. White blood cells, nerve cells, and epithelial cells all maintain their nuclei throughout their lifespan.

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