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Which of the following statements are correct?


(i) Ca+2  is necessary for blood coagulation.

(ii) Coagulation in blood vessel is prevented during normal condition by heparin.

(iii) Clotting of blood involves changes of fibrinogen to fibrin by thrombin.

(iv) Blood clotting involves cascading process involving a number of factors present always in the active form.

  • a)
    (i), (iii) and (iv)

  • b)
    (ii) and (iv)

  • c)
    (i), (ii) and (iii)

  • d)
    (iii) and (iv)

Correct answer is option 'C'. Can you explain this answer?
Verified Answer
Which of the following statements are correct?(i) Ca+2 is necessary fo...
Correct option is C. 
This question is part of UPSC exam. View all NEET courses
Most Upvoted Answer
Which of the following statements are correct?(i) Ca+2 is necessary fo...
Statement analysis:
(i) Ca2+ is necessary for blood coagulation.
- True, Ca2+ ions are required for the conversion of prothrombin to thrombin, which is a crucial step in blood coagulation.

(ii) Coagulation in blood vessel is prevented during normal condition by heparin.
- False, heparin is an anticoagulant that prevents blood clotting. It is not normally present in the body, but is used therapeutically to prevent blood clots.

(iii) Clotting of blood involves changes of fibrinogen to fibrin by thrombin.
- True, fibrinogen is converted to fibrin by the action of thrombin, which then forms a mesh-like structure to form a blood clot.

(iv) Blood clotting involves cascading process involving a number of factors present always in the active form.
- False, blood clotting involves a complex cascading process involving a number of factors that are present in inactive forms. These factors are activated in a specific sequence to form a blood clot.

Answer explanation:
Option (c) (i) and (iii) are correct statements about blood coagulation. Ca2+ ions are necessary for the process and fibrinogen is converted to fibrin by thrombin. Option (b) is incorrect as heparin prevents blood clotting. Option (d) is incorrect as blood clotting involves a cascading process with inactive factors. Therefore, the correct answer is option (c).
Community Answer
Which of the following statements are correct?(i) Ca+2 is necessary fo...
Correct ans is c because ca2+ ion plays a major role in coagulation which help to convert pro thrombin to thrombin not only this but all enzyme which are in inactive state
coagulation of blood vessel is performed by heparin but here they have given as prevented
yes coagulation involves change in fibrongen to fibrin this is 3 step
The coagulation cascade involves the activation of a series of clotting factors
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Which of the following statements are correct?(i) Ca+2 is necessary for blood coagulation.(ii) Coagulation in blood vessel is prevented during normal condition by heparin.(iii) Clotting of blood involves changes of fibrinogen to fibrin by thrombin.(iv) Blood clotting involves cascading process involving a number of factors present always in the active form.a)(i), (iii) and (iv)b)(ii) and (iv)c)(i), (ii) and (iii)d)(iii) and (iv)Correct answer is option 'C'. Can you explain this answer?
Question Description
Which of the following statements are correct?(i) Ca+2 is necessary for blood coagulation.(ii) Coagulation in blood vessel is prevented during normal condition by heparin.(iii) Clotting of blood involves changes of fibrinogen to fibrin by thrombin.(iv) Blood clotting involves cascading process involving a number of factors present always in the active form.a)(i), (iii) and (iv)b)(ii) and (iv)c)(i), (ii) and (iii)d)(iii) and (iv)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 Which of the following statements are correct?(i) Ca+2 is necessary for blood coagulation.(ii) Coagulation in blood vessel is prevented during normal condition by heparin.(iii) Clotting of blood involves changes of fibrinogen to fibrin by thrombin.(iv) Blood clotting involves cascading process involving a number of factors present always in the active form.a)(i), (iii) and (iv)b)(ii) and (iv)c)(i), (ii) and (iii)d)(iii) and (iv)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 Which of the following statements are correct?(i) Ca+2 is necessary for blood coagulation.(ii) Coagulation in blood vessel is prevented during normal condition by heparin.(iii) Clotting of blood involves changes of fibrinogen to fibrin by thrombin.(iv) Blood clotting involves cascading process involving a number of factors present always in the active form.a)(i), (iii) and (iv)b)(ii) and (iv)c)(i), (ii) and (iii)d)(iii) and (iv)Correct answer is option 'C'. Can you explain this answer?.
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