AP BIOLOGY

THE HUMAN IMMUNE SYSTEM

TYPES OF IMMUNITY

Question [CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
A blood clot forms around a network of protein. What is the protein?
A
Fibrinogen
B
Fibrin
C
Thrombin
D
Prothrombin
Explanation: 

Detailed explanation-1: -Blood clotting is a rapid process, during which a protein called fibrinogen converts into fibrin. Fibrin forms a network that functions as the backbone of the clot, providing mechanical strength.

Detailed explanation-2: -fibrin, an insoluble protein that is produced in response to bleeding and is the major component of the blood clot. Fibrin is a tough protein substance that is arranged in long fibrous chains; it is formed from fibrinogen, a soluble protein that is produced by the liver and found in blood plasma.

Detailed explanation-3: -It is a 340-kDa glycoprotein, normally present in human blood plasma at a concentration of about 1.5–4 g/L, that is essential for hemostasis, wound healing, inflammation, angiogenesis, and several other biological functions.

Detailed explanation-4: -A protein involved in forming blood clots in the body. It is made in the liver and forms fibrin. Fibrin is the main protein in a blood clot that helps stop bleeding and heal wounds.

Detailed explanation-5: -Fibrin (also called Factor Ia) is a fibrous, non-globular protein involved in the clotting of blood. It is formed by the action of the protease thrombin on fibrinogen, which causes it to polymerize. The polymerized fibrin, together with platelets, forms a hemostatic plug or clot over a wound site.

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