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Blood
Enumerate the elements of blood, which include red blood cells, white blood cells, platelets, and plasma.
7
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70
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49
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90 min
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CambridgeIGCSEBiologyTransport in animals
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Blood outcomes7 objectives
- Enumerate the elements of blood, which include red blood cells, white blood cells, platelets, and plasma.
- Recognize red and white blood cells in images and diagrams.
- Explain the functions of blood components: (a) red blood cells transport oxygen with the help of haemoglobin, (b) white blood cells are involved in phagocytosis and producing antibodies, (c) platelets assist in clotting (d) plasma carries blood cells, ions, nutrients, urea, hormones, and carbon dioxide.
- Explain how blood clotting serves to prevent blood loss and block the entry of pathogens.
- Recognize lymphocytes and phagocytes in images and diagrams.
- Explain the roles of: (a) lymphocytes in producing antibodies, (b) phagocytes in engulfing pathogens through phagocytosis.
- Outline the clotting process as the transformation of fibrinogen into fibrin, which creates a mesh.
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