Q.
Four healthy people in their twenties got involved in injuries resulting in damage and death of a few cells of the following. Which of the cells are least likely to be replaced by new cells ?
A) Osteocytes
B) Malpighian layer of the skin
C) Liver cells
D) Neurons
Explanation
[Solution from source] Mature neurons are permanently out of the cell cycle (G₀) and are generally not replaced. The Malpighian layer of the skin divides all the time, liver cells can regenerate, and bone is remodelled by osteoblasts. Answer (4).
Reviewed by Dr. Abubacker
Physics Educator & NEET/JEE Specialist
Ph.D. in Physics with 19+ years of teaching experience.