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CAIE IGCSE Biology 9.4.7 Blood Clotting & Fibrin Formation

Practise sequencing conversion of soluble fibrinogen into insoluble fibrin that forms a mesh over a wound.

Syllabus
2026–2028
Course
Biology 0610

Exam points

  • link vessel damage and platelet activity to initiation of the clotting sequence
  • state that soluble fibrinogen is converted into insoluble fibrin
  • explain how fibrin fibres form a mesh that traps blood cells and seals the wound

9.4.7—Process of clotting as the conversion question 1

[Maximum number: 5]

Fig. 6.1 is a photomicrograph of a blood clot.

Fig. 6.1

Fig. 6.1

Describe how a blood clot forms.

Use the letters in Fig. 6.1 in your answer.

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