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Question
Assertion :Fibrins are formed by the conversion of inactive fibrinogens in the plasma by the enzyme thrombin. Reason: Plasma without fibrinogen and blood corpuscles is called serum.
Assertion :Fibrins are formed by the conversion of inactive fibrinogens in the plasma by the enzyme thrombin. Reason: Plasma without fibrinogen and blood corpuscles is called serum.
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Solution
The correct option is B Both Assertion and Reason are correct but Reason is not the correct explanation for Assertion
Plasma contains prothrombin and fibrinogen. During clotting, inactive prothrombin converts to active thrombin. Thrombin acts as a proteolytic enzyme to separate two peptides from the soluble plasma protein fibrinogen molecule to form insoluble fibrin monomer.The part of blood plasma in the clotted area is squeezed out as a clear fluid called blood serum. The serum is plasma except that it lacks fibrinogen and corpuscles. It is, therefore, unable to clot.So, the correct answer is 'Both Assertion and reason are correct but the reason is not the correct explanation for Assertion'.
Plasma contains prothrombin and fibrinogen. During clotting, inactive prothrombin converts to active thrombin. Thrombin acts as a proteolytic enzyme to separate two peptides from the soluble plasma protein fibrinogen molecule to form insoluble fibrin monomer.
The part of blood plasma in the clotted area is squeezed out as a clear fluid called blood serum. The serum is plasma except that it lacks fibrinogen and corpuscles. It is, therefore, unable to clot.
So, the correct answer is 'Both Assertion and reason are correct but the reason is not the correct explanation for Assertion'.
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