Question

Which one is enucleated?

• A. Squamous epithelial cells
• B. Mature leucocyte of man
• C. Mature erythrocyte of frog
• D. Mature erythrocyte of man
• E. Osteocyte in man

Answer 1

The correct option is D Mature erythrocyte of man

• Enucleation is the phenomenon in which the nucleus is removed. Enucleation occurs roughly when the cell has reached maturity.
• Red blood cells or Erythrocytes are initially produced in the bone marrow with a nucleus. They then undergo a process known as enucleation.
• Enucleation allows the red blood cell to contain more hemoglobin and therefore, carry more oxygen molecules. It also allows the cell to have its distinctive bi-concave shape which aids diffusion. This shape would not be possible if the cell had a nucleus in the way. Hence mature erythrocyte of man is enucleated.
• So, the correct answer is 'Mature erythrocyte of man'.