Question

Which of the following is a false statement about blood cells?

A. Once RBCs mature, they become oval bi-concave discs whose life span is 120 days

B. Once RBCs mature, they become bi-concave discs with a central nucleus and can live for an extended period of time

C. The WBCs are bigger and much fewer than the RBCs

D. The most prevalent WBCs are phagocytes and lymphocytes

Answer 1

The false statement about blood cells is that mature RBCs have a central nucleus when they actually lack a nucleus. Mature RBCs are biconcave discs with a lifespan of about 120 days, and their lack of nucleus allows for more hemoglobin and better oxygen transport.

Step-by-step explanation:

The false statement about blood cells is: B. Once RBCs mature, they become bi-concave discs with a central nucleus and can live for an extended period of time. Mature red blood cells (RBCs) are, in fact, biconcave discs that lack a nucleus. Without the nucleus and other organelles, red blood cells can contain more hemoglobin, the protein responsible for oxygen transport. These cells have an average lifespan of about 120 days, after which they are destroyed in the liver and spleen.

White blood cells (WBCs), on the other hand, are generally larger and fewer in number than red blood cells. The most prevalent types of WBCs are phagocytes and lymphocytes, which are key players in the body's immune response.