Question:

Following are classified as plasma proteins EXCEPT ______________.

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Plasma proteins mainly include albumin, globulins, and fibrinogen.
Updated On: Mar 6, 2026
  • albumin
  • prothrombin
  • thromboplastin
  • fibrinogen
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The Correct Option is C

Solution and Explanation

Step 1: Understanding plasma proteins.
Plasma proteins are proteins present in blood plasma and play important roles in osmotic balance, immunity, and blood clotting.
Step 2: Identifying true plasma proteins.
Albumin maintains osmotic pressure.
Prothrombin and fibrinogen are clotting factors present in plasma.
Step 3: Identifying the exception.
Thromboplastin is not a plasma protein; it is released from damaged tissues and platelets during blood clotting.
Step 4: Conclusion.
Therefore, thromboplastin is not classified as a plasma protein.
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