Biology · Oct / Nov 2025 · Paper 22 · Question 5
5090
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A sample of human blood is put in a small tube. The tube is placed in a centrifuge, which spins it around very fast, to separate the components of the blood. The denser components of the blood collect at the bottom of the tube. Fig. 5.1 shows the composition of this blood sample. examples of proteins 91% proteins 7% solutes 2% platelets and white blood cells red blood cells pale yellow white red 1 antibodies 2 insulin examples of solutes 1 2 3 Fig. 5.1
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5(a)(i)[5]
5(a)(ii)[2]
5(b)[4]
5(c)(i)[1]
5(c)(ii)[3]
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