CBSE Class 10 Science 2019 · Paper 31/3/3 · Question 12
What is haemoglobin ? State the consequences of deficiency of haemoglobin in our bodies.
Answer
Haemoglobin is the oxygen-carrying pigment of red blood cells; its deficiency lowers oxygen supply to tissues and causes anaemia.
Haemoglobin is the respiratory pigment present in the red blood cells (an iron-containing protein). It has a very high affinity for oxygen and transports oxygen from the lungs to the tissues.
Consequences of its deficiency: (i) the oxygen-carrying capacity of the blood falls, so less oxygen is supplied to the body tissues and the cells get less energy from respiration; (ii) the person suffers from anaemia, with tiredness, weakness, breathlessness and a pale look.
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