OCR Biology F211 A quiz testing the overall knowledge of Unit F211 Celle, Exchange and Transport. 2.5 / 5 based on 7 ratings ? BiologyASOCR Created by: BellaCreated on: 13-05-12 13:51 What component of the Cell Surface membrane maintains it's fluidity? Cholesterol 1 of 2 In what order does the wave of excitation travel in one heart beat? SAN, AVN, Purkyne tissue 2 of 2
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