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Assertion: Fibrins are produced by the conversion of inactive fibrinogens in the plasma,
in the presence of 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.
Correct answer is option 'C'. Can you explain this answer?
Most Upvoted Answer
Assertion: Fibrins are produced by the conversion of inactive fibrinog...
A coagulam is mainly formed of a network of threads called fibrins in which dead and damaged formed elements of blood are trapped. Fibrins are produced by the conversion of inactive fibrinogens in the plasma by the enzyme thrombin. Thrombins, in turn are formed from another inactive substance present in the plasma called prothrombin. An enzyme complex, prothrombinase, is required for the above reaction.
The clot seals the wound and stops bleeding. After its formation, clot starts contracting and a pale yellow fluid, the serum, oozes out. This serum is blood plasma minus fibrinogen and blood corpuscles.
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Community Answer
Assertion: Fibrins are produced by the conversion of inactive fibrinog...
Assertion Explained
The assertion states that fibrins are produced by the conversion of inactive fibrinogens in the plasma, in the presence of the enzyme thrombin. This is accurate as:
- Fibrinogen is a soluble plasma protein that is converted to fibrin by thrombin during the blood coagulation process.
- Thrombin is activated during the cascade of clotting factors that occur in response to injury.
Reason Explained
The reason asserts that plasma without fibrinogen and blood corpuscles is called serum. This statement is also true:
- Serum is the liquid portion of blood that remains after coagulation, which means it does not contain clotting factors, including fibrinogen.
- It is essentially plasma minus the clotting proteins and cells.
Relationship Between Assertion and Reason
While both the assertion and the reason are true, the reason does not correctly explain the assertion:
- The process of fibrin formation is independent of the definition of serum.
- The production of fibrin from fibrinogen occurs during the clotting process, while serum is what remains after this process is complete.
Conclusion
Therefore, the correct answer is:
- c) If Assertion is true but Reason is false.
This correctly identifies that while the conversion of fibrinogen to fibrin is true, the reason provided about serum does not serve as an explanation for the assertion regarding fibrin formation.
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Assertion: Fibrins are produced by the conversion of inactive fibrinogens in the plasma,in the presence of 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 Assertionc)If Assertion is true but Reason is false.d)If both Assertion and Reason are false.Correct answer is option 'C'. Can you explain this answer?
Question Description
Assertion: Fibrins are produced by the conversion of inactive fibrinogens in the plasma,in the presence of 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 Assertionc)If Assertion is true but Reason is false.d)If both Assertion and Reason are false.Correct answer is option 'C'. Can you explain this answer? for NEET 2024 is part of NEET preparation. The Question and answers have been prepared according to the NEET exam syllabus. Information about Assertion: Fibrins are produced by the conversion of inactive fibrinogens in the plasma,in the presence of 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 Assertionc)If Assertion is true but Reason is false.d)If both Assertion and Reason are false.Correct answer is option 'C'. Can you explain this answer? covers all topics & solutions for NEET 2024 Exam. Find important definitions, questions, meanings, examples, exercises and tests below for Assertion: Fibrins are produced by the conversion of inactive fibrinogens in the plasma,in the presence of 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 Assertionc)If Assertion is true but Reason is false.d)If both Assertion and Reason are false.Correct answer is option 'C'. Can you explain this answer?.
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