Multiple choice

Which of the following statements are true regarding RBCs? P. Erythrocytes in mammals are anucleate when mature. Q. The liver acts as a reservoir of red blood cells. R. The color of erythrocytes is due to the heme group of haemoglobin. S. Haemoglobin in the erythrocytes does not carry carbon dioxide at all.

  1. P and Q

  2. P and R

  3. P and S

  4. Q and R

  5. R and S
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

Mammalian erythrocytes are non-nucleated cells in their mature form. They have nuclei during early phases of erythropoiesis, but extrude them during development as they mature in order to provide more space for haemoglobin. The colour of erythrocytes is due to the heme group of haemoglobin.

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