Which of the Following Statements Are True of Red Blood

Which of the following statements are true of red blood cells (Select all that apply) ?

A) The protein hemoglobin contains the mineral iron.
B) The mineral iron enables RBCs to carry oxygen.
C) RBCs pick up oxygen in pulmonary capillaries.
D) The shape of an RBC is best described as a deflated soccer ball.
E) Hemoglobin that has given up its oxygen is called debonded hemoglobin.
F) The life span of an RBC is about 60 days.