SSC
BIOLOGY
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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The thromboplastins in the presence of ____ and ____, convert prothrombin to thrombin.I. sodium ionII. vitamin KIII. potassiumIV. calcium ion
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I and II
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II and IV
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I and IV
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II and III
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Explanation:
Detailed explanation-1: -Thromboplastin converts prothrombin, which is synthesized by calcium ions and vitamin K, into thrombin. The thrombin further converts the fibrinogen in the plasma to fibrin.
Detailed explanation-2: -The proteolytic conversion of prothrombin to thrombin catalysed by prothrombinase is one of the more extensively studied reactions of blood coagulation.
Detailed explanation-3: -Vitamin K is essential for the formation of prothrombin from liver cells and helps in blood coagulation. Vitamin K is also known as antihaemorrhagic factor or phylloquinone.
There is 1 question to complete.