Question:
With reference to human plasma, select the CORRECT match.
With reference to human plasma, select the CORRECT match.
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Properdin is a plasma protein; prothrombin is a coagulant and heparin is an anticoagulant.
Updated On: Nov 12, 2026
- Anticoagulant – Prothrombin
- Regulators - Antibodies
- Waste - Heparin
- Protein - Properdin
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The Correct Option is D
Solution and Explanation
Step 1: Understanding the Concept
Plasma contains proteins, regulators (hormones, enzymes), wastes and clotting-related substances.
Step 2: Check the first three
Prothrombin is a clotting factor, not an anticoagulant. Antibodies are for defence, not regulators. Heparin is an anticoagulant, not a waste.
Step 3: Check option D
Properdin is a plasma protein belonging to the defence (complement) system, along with albumin, globulin and fibrinogen. So this match is correct.
Final Answer:
The correct match is protein - properdin. \[ \boxed{\text{(D) }\text{Protein - Properdin}} \]
Plasma contains proteins, regulators (hormones, enzymes), wastes and clotting-related substances.
Step 2: Check the first three
Prothrombin is a clotting factor, not an anticoagulant. Antibodies are for defence, not regulators. Heparin is an anticoagulant, not a waste.
Step 3: Check option D
Properdin is a plasma protein belonging to the defence (complement) system, along with albumin, globulin and fibrinogen. So this match is correct.
Final Answer:
The correct match is protein - properdin. \[ \boxed{\text{(D) }\text{Protein - Properdin}} \]
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