CAIE A Level Biology 9700 · Homeostasis
The Bowman's capsule and the proximal convoluted tubule (PCT) are two important parts of a nephron. Describe how the structure of the Bowman's capsule is adapted for ultrafiltration and how the structure of the proximal convoluted tubule is adapted for selective reabsorption.
5 marks, so the mark scheme is looking for about 5 separate creditworthy points. Making the same point twice in different words earns it once.
Describe means: Say what happens or what something is like, in order and with detail. You are not being asked why. If there is data, quote it: name the trend, then give figures with units at the points where it changes.
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