Structural Organisation In Animals Question 443
Question: Assertion : Blood can be coagulated by adding oxalate (Sodium or Potassium Oxalate) to it. Reason : Oxalate depresses the action of anticoagulant present in the blood.
Options:
A) If both the assertion and the reason are true and the reason is a correct explanation of the assertion
B) If both the assertion and reason are true but the reason is not a correct explanation of the assertion
C) If the assertion is true but the reason is false
D) If both the assertion and reason are false
Show Answer
Answer:
Correct Answer: D
Solution:
Coagulation is brought about by the hydrolysis of soluble fibrinogen to insoluble fibrin catalysed by the enzyme thrombin.
Calcium ions $ (C{a^{2+}}) $ are essential for activation and action of thrombin.
Oxalate (Sodium or Potassium Oxalate) has the property to precipitate calcium ions kept, consequently oxalate can prevent coagulation.
BETA
