本题目来源于试卷: SL Topic C3.2 Defence against disease,类别为 IB生物学
[问答题]
6. Outline the process by which damagedv71cm:s *hv vn d v45umtaj6 lu5z-2bi skin can be sealed by the blood forming a clozad5 j6 ut5mi-b4 v2lut.
参考答案: Platelets in the blood encounter a rough surface, or damaged cells.
The platelets release clotting factors.
A cascade of reactions occur (in response to the clotting factors).
Fibrinogen is converted to fibrin.
By the enzyme thrombin.
Fibrin is an insoluble (fibrous) protein.
Fibrin traps red blood cells, forming a clot.
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