The Average Life Span of a Red Blood Cell Is

Question

The average life span of a red blood cell is
A) 24 hours.
B) 1 month.
C) 4 months.
D) about 1 year.
E) many years.

Accepted Answer

The average life span of a red blood cell is about 4 months or 120 days. This is because red blood cells do not have a nucleus and cannot undergo mitosis or repair themselves, so they eventually deteriorate and are removed by the body's immune system.