Tag: blood clotting

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Questions Related to blood clotting

Multiple choice biology soldiers of defense blood clotting and healing of wounds coagulation of blood blood clotting

Fill in the blanks with suitable words given below:
The liquid part of coagulated blood is known as _________

  1. Serum

  2. Fibrinogen

  3. Hemoglobin

  4. Pulmonary

  5. Sphygmomanometer

  6. Ventricles
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

The liquid part of coagulated blood is known as serum. It is the liquid portion of blood clot . It includes all proteins not used in clotting of blood and all the electrolytes, hormones, antibodies, antigens etc..

Hence, the correct answer is 'Serum' .

Multiple choice biology soldiers of defense blood clotting and healing of wounds coagulation of blood blood clotting

Choose the correct answer from the alternatives given.
Which of the following ions is involved in blood clotting?

  1. $K^+$
  2. $Na^+$
  3. $Fe^{+++}$
  4. $Ca^{++}$
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

Blood coagulation is a complex biochemical process involving platelets and many proteins (enzymes).  Calcium is involved at several steps in the blood clotting, including the activation of the platelets, activation of clotting factors and enzymes which are present in the blood in inactive form. The $Ca^{++}$ ions bind with prothrombin and covert it into active form thrombin. The thrombin in turn converts fibrinogen into fibrin (a thread like protein) which traps red blood cells and helps in the formation of clot.

So, the correct option is '$Ca^{++}$'.

Multiple choice biology soldiers of defense blood clotting and healing of wounds coagulation of blood blood clotting

Sodium oxalate prevents blood clotting due to

  1. Blocking of fibrinogen transformation

  2. Covering RBC

  3. Inhibiting activity of clotting factor of plasma

  4. Combining with calcium ions of blood
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

Sodium oxalate, like citrates, can be used to remove calcium ions (Ca${^2}$${^+}$) from blood plasma. It thus prevents blood from clotting. In the presence of calcium ions and other clotting factors, factor X activates an enzyme called prothrombin activator. This enzyme then converts the plasma protein prothrombin into thrombin. Thrombin is an enzyme that, in turn, converts fibrinogen to fibrin.