Question

question 12 (2 points) listen red blood cells are highly specialized for their function. which of the following is not a specialized feature of red blood cells? high hemoglobin content lack of a nucleus flattened shape small diameter long life span

Explanation:

Red blood cells have high hemoglobin content for oxygen - carrying, lack a nucleus to make room for more hemoglobin, have a flattened shape for better gas exchange and a small diameter to pass through capillaries. However, they have a relatively short lifespan (about 120 days), not a long lifespan.

Answer:

E. long life span