Question

The metal which is present in our body in red blood corpuscles and whose deficiency in the body causes anaemia is
A.) Zinc
B.) Arsenic
C.) Iron
D.) Tin

Answer 1

Hint: Try to recall that any process that decreases the life span of red blood cells can cause anaemia and one of the reasons is decrease in or lack of production of red blood corpuscles which restricts the regulation of oxygen in the body. Now by using this you can easily answer the given question.

Complete step by step solution:
It is known to you that haemoglobin is a protein molecule found in red blood cells (erythrocytes) and is responsible for carrying oxygen to the body’s tissues.
Each molecule of haemoglobin is made up of 4 subunits and each one of them carries a molecule of heme.
The heme molecule contains one iron atom, and this is the bind point for oxygen molecules.
One molecule of oxygen binds to each iron atom via covalent bond. This iron-oxygen bond is affected by several things.
There are many reasons due to which lack of production of red blood corpuscles happens and one of the reasons is due to deficiency of iron. This happens when the body doesn’t have enough iron to produce haemoglobin and due to this your body and muscles won’t get enough oxygen and leads to the condition of anaemia.
Hence, from the above argument we can say that option C is the correct option to the given question.

Note: It should be remembered to you that iron-oxygen bond is responsible for the bright red colour of blood and when oxygen is not present then the haemoglobin molecule is dark red in colour.
Also, you should remember that the ferrous ions can reversibly bind oxygen molecules without changing the oxidation state of the iron.