Question

5.
What is correct about human red blood cells?
a) Have limited life span b) Are capable of phagocytosis
c) Produce antibodies
d) Are multinucleate

Answer 1

Option(a) Having a limited life span is the right answer.

• A type of blood cell that is responsible for the oxygen supply to the tissues present in the human body.
• 120days are the timeline red blood cells have, so the first option is correct.
• When a large substance is digested slowly then that process is known as phagocytosis. White blood cells are the ones who can do the phagocytosis function
• Antibodies do not create by the red blood cells. Creating antibodies is done by the white blood cells.
• Since a mature RBC does not have a nucleus, these blood cells do not belong to the multinucleate group.

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Answer 2

Option A is the correct option i.e. human red blood cells have a limited life span.

• Red blood cells or erythrocytes are one of the components of blood They contain hemoglobin, which is a protein that carries oxygen throughout the body.
• The lifespan of RBC is about 120 days. Due to maturation, they also lose their nucleus and organelles to expand the area for oxygen and cannot repair themselves when impaired and thus limiting their timespan.
• Phagocytes are cells that protect the body by digesting dangerous foreign particles and this process is carried out by macrophages, neutrophils, and dendritic cells.
• White blood cells produce antibodies to resist foreign particles and support other immune responses.
• RBCs are not multinucleate. The mammalian red blood cells (RBCs), do not contain nuclei at all.