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A cell that has lost the ability to divide but continues to function is best described as

  • A.arrested by a failure of its genome
  • B.terminally differentiated
  • C.totipotent and undifferentiated
  • D.undergoing programmed cell death

Answer: B

Correct answer: terminally differentiated

A terminally differentiated cell has left the cell cycle permanently and devotes itself to its specialised function - a neuron, a cardiac muscle cell, a mature red blood cell. It is neither damaged nor dying, which distinguishes it from a genome failure and from apoptosis, and it is the opposite end of the scale from the totipotent cell that has differentiated into nothing at all.

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