EASY
Earn 100

Mechanism of blood clotting is given below:

An injury or a trauma stimulates the platelets in the blood to release certain factors which activate the mechanism of coagulation. An enzyme complex, ______P_______ is formed by a series of linked enzymic reactions (______Q_______process) involving a number of factors present in the plasma in an inactive state. This enzyme complex is required for formation of______R_______. _____S_______ ions play a very important role in clotting.

Identify the correct option that represents P, Q, R, and S.

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Important Questions on Body Fluids and Circulation

MEDIUM
Biology>Human Physiology>Body Fluids and Circulation>Coagulation of Blood
Persons with 'AB' blood group are called as "Universal recipients". This is due to:
EASY
Biology>Human Physiology>Body Fluids and Circulation>Coagulation of Blood
When a blood vessel is injured a number of physiological mechanisms are activated that promote hemostasis. Identify the correct group from the following:
EASY
Biology>Human Physiology>Body Fluids and Circulation>Coagulation of Blood
Which enzyme is responsible for the conversion of inactive fibrinogens to fibrins?
MEDIUM
Biology>Human Physiology>Body Fluids and Circulation>Coagulation of Blood

The organisation which procures and supplies blood during an emergency.

EASY
Biology>Human Physiology>Body Fluids and Circulation>Coagulation of Blood
A person with blood group AB has
EASY
Biology>Human Physiology>Body Fluids and Circulation>Coagulation of Blood
A certain road accident patient with unknown blood group needs immediate blood transfusion. His own doctor friend at once offers his blood. What was the blood group of the donor?
EASY
Biology>Human Physiology>Body Fluids and Circulation>Coagulation of Blood

Study the following.
A) Blood coagulation is also called haemolysis.
B) Blood clotting is a change in plasma.
C) Serum does not contain clotting factors like prothrombin and fibrinogen.
D) Proconvertin is involved in extrinsic pathway.

Select the incorrect statement.

MEDIUM
Biology>Human Physiology>Body Fluids and Circulation>Coagulation of Blood
Identify the correct combination showing the blood group with their respective antigens (sugar), antibody genotype and special character.
EASY
Biology>Human Physiology>Body Fluids and Circulation>Coagulation of Blood
Person with blood group AB is considered as universal recipient because he has:
EASY
Biology>Human Physiology>Body Fluids and Circulation>Coagulation of Blood
A sample of blood shows clumping with antiserum A but not with antiserum B. The blood group would be
EASY
Biology>Human Physiology>Body Fluids and Circulation>Coagulation of Blood
How many types of blood groups are found in human beings? Which blood group is a universal donor?
EASY
Biology>Human Physiology>Body Fluids and Circulation>Coagulation of Blood
Which one of the following is correct?
EASY
Biology>Human Physiology>Body Fluids and Circulation>Coagulation of Blood
Explain how body will react to the situations described below:
A foreign antigen reaches one's blood.
EASY
Biology>Human Physiology>Body Fluids and Circulation>Coagulation of Blood
Clotting of blood in blood banks can be prevented by the addition of
MEDIUM
Biology>Human Physiology>Body Fluids and Circulation>Coagulation of Blood
How many arteries are there in an umbilical cord?
EASY
Biology>Human Physiology>Body Fluids and Circulation>Coagulation of Blood
Identify the factor which starts extrinsic pathway of blood clotting
EASY
Biology>Human Physiology>Body Fluids and Circulation>Coagulation of Blood
This clotting factor is involved in the formation of prothrombin activator in the intrinsic pathway of the clotting process of blood
EASY
Biology>Human Physiology>Body Fluids and Circulation>Coagulation of Blood
If the RBCs of a blood sample are agglutinated when mixed with anti B antibodies, then the blood group of the blood sample is
MEDIUM
Biology>Human Physiology>Body Fluids and Circulation>Coagulation of Blood
A person with blood group "A" can (i) donate blood to, and (ii) receive blood from:
HARD
Biology>Human Physiology>Body Fluids and Circulation>Coagulation of Blood

Which of the following has no role in blood clotting?