Chapter 10 (10.4 - 10.5) Biology Form 4 KSSM

Which of the following blood helps in blood clotting?

• Erythrocyte

• Leucocyte

• Platelet

• Plasma

Why blood clotting is very important when there is a wound on your skin?

• To prevent excessive bleeding

• To allow blood loss continously

• To avoid scars on skin

• To ensure that the blood is not infected with bacteria

Which vitamin is important in blood clotting?

• Vitamin A

• Vitamin B

• Vitamin C

• Vitamin K

Which of the following converts prothrombin to thrombin?

• Fibrin

• Fibrinogen

• Thrombokinase

• Platelet

Which of the following converts fibrinogen into fibrin?

• Prothrombin

• Thrombin

• Thrombokinase

• Vitamin D

Why fibrin is important in blood clotting?

• It closes the wound

• It avoids scars

• It prevents infection

• It makes the skin becomes elastic

Name the disease that prevents blood from clotting

• Stroke

• Diabetes

• Haemophilia

• Diarrhea

Why haemophilia occurs?

• Lack of erythrocyte

• Lack of clotting factors

• Lack of vitamin C

• Lack of calcium

_________ is the formation of blood clot (thrombus)

• Thrombosis

• Thombosys

• Thrombosys

• Thrimbosus

Which one is TRUE about embolism?

• If embolus gets stuck in a tiny blood vessel, the blood will flow smoothly

• If embolus gets stuck in a tiny blood vessel, the blood vessel will burst

• If embolus gets stuck in a tiny blood vessel, the blood flow will stop

• If embolus gets stuck in a tiny blood vessel, the person will die instantly