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.

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. (A) If both assertion and reason are true and reason is the correct explanation of assertion (B) If both assertion and reason are true but reason is not the correct explanation of assertion (C) If assertion is true but reason is false (D) If both assertion and reason are false

Tardigrade Admin · Accepted Answer

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'.

Q. 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.

If both assertion and reason are true and reason is the correct explanation of assertion

If both assertion and reason are true but reason is not the correct explanation of assertion

If assertion is true but reason is false

If both assertion and reason are false

Q. 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.