In a model of a capillary network, each capillary has the same dimensions. The number of capillaries doubles and the same total blood flow is shared equally between them.
Which combination is expected?
total exchange area doubles; flow through each capillary doubles
total exchange area halves; flow through each capillary doubles
total exchange area doubles; flow through each capillary halves
total exchange area halves; flow through each capillary halves
67 exam-style questions on Edexcel GCSE Biology 8.2 Blood and circulation, covering 8.2.1 Structure and function of the blood, 8.2.2 Structure of blood vessels, 8.2.3 Structure of the heart and circulatory system, and 8.2.4 Cardiac output. Each one has a worked solution and a mark scheme showing where the marks go.