BLOOD CARDIOVASCULAR SYSTEM LYMPHOID ORGANS
BLOOD
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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a biconcave shape
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a nucleus and most organelles
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the ability to transport both oxygen and carbon dioxide
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the iron-containing molecule called hemoglobin
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Detailed explanation-1: -The main difference between RBCs and WBCs is their function. RBCs carry oxygen throughout the body, while WBCs fight off infection. RBCs are also smaller and have a concave shape, while WBCs are larger and have different shapes. Finally, RBCs contain haemoglobin, while WBCs do not.
Detailed explanation-2: -All white blood cells have nuclei, which distinguishes them from the other blood cells, the anucleated red blood cells (RBCs) and platelets. The different white blood cells are usually classified by cell lineage (myeloid cells or lymphoid cells). White blood cells are part of the body’s immune system.
Detailed explanation-3: -The absence of a nucleus is an adaptation of the red blood cell for its role. It allows the red blood cell to contain more hemoglobin and, therefore, carry more oxygen molecules. It also allows the cell to have its distinctive bi-concave shape which aids diffusion.