MEDICAL
LUNGS
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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Phagocyte
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Lymphocyte
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Red blood cell
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None of the above
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Detailed explanation-1: -– Unlike the rest of the cells in your body, your red blood cells lack nuclei.
Detailed explanation-2: -Mammal red blood cells (erythrocytes) contain neither nucleus nor mitochondria. Traditional theory suggests that the presence of a nucleus would prevent big nucleated erythrocytes to squeeze through these small capillaries. However, nucleus is too small to hinder erythrocyte deformation.
Detailed explanation-3: -Red Blood Cells are produced in the bone marrow and they have a nucleus when they are initially produced. Later, they lose nucleus in order to accommodate more haemoglobin so that they can transport more amount of oxygen. Therefore they are still considered as cells.
Detailed explanation-4: -Prokaryotes (meaning ‘before nucleus’) are cells without a definite nucleus. The DNA floats in the cytoplasm and they divide through mitosis. RBC and platelets present in eukaryotes also do not have the nucleus.