Erythrocytes cannot divide because they lack which cellular structure?

Erythrocytes cannot divide because they lack which cellular structure?

• A. Mitochondria
• B. Nucleus
• C. Ribosomes
• D. Golgi apparatus

Answer: (B)

Cell division requires genetic material housed in the nucleus to be replicated and to coordinate mitosis. Mature human erythrocytes become anucleate, meaning they lose their nucleus during development to maximize hemoglobin content. Without a nucleus, there is no DNA to copy and no control center to drive division, so the cells cannot divide. The other organelles listed aren’t what prevents division—red blood cells are adapted to transport oxygen and rely on existing cytoplasmic machinery for energy, not on organelles like mitochondria or Golgi to enable division. The absence of the nucleus is the key reason they can’t divide.

Cell division requires genetic material housed in the nucleus to be replicated and to coordinate mitosis. Mature human erythrocytes become anucleate, meaning they lose their nucleus during development to maximize hemoglobin content. Without a nucleus, there is no DNA to copy and no control center to drive division, so the cells cannot divide. The other organelles listed aren’t what prevents division—red blood cells are adapted to transport oxygen and rely on existing cytoplasmic machinery for energy, not on organelles like mitochondria or Golgi to enable division. The absence of the nucleus is the key reason they can’t divide.