WBCS.LIVE practice question

The life span of a red blood cell is __________ days.

Solve this multiple-choice question and check the correct answer with its explanation below.

Answer options

  1. 60
  2. 120
  3. 180
  4. 240

Correct answer and explanation

Correct answer: 120

Explanation: āœ… Correct Answer: B) 120 šŸ“š Explanation: Human red blood cells (erythrocytes) have an average operational lifespan of 120 days. After circulating to deliver oxygen, they become fragile and are subsequently destroyed and recycled by the spleen and the liver.