A Mature Red Blood Cell Lacks a Nucleus; Therefore, It

Question

A mature red blood cell lacks a nucleus; therefore, it
A) can repair itself readily.
B) is malformed.
C) can only divide once more.
D) will be a long-lived cell.
E) cannot make new proteins and will be worn out within a few months.

Accepted Answer

Mature red blood cells lack a nucleus, which means they cannot synthesize new proteins. This inability to repair or renew themselves leads to their eventual wear out within a few months, necessitating their replacement.