Absorption — Normal
Apply the topic independently and explain your method. No hints during the test.
Includes extension practice
Basic absorption is required, but the detailed villus/microvillus, capillary and lacteal model is additional standalone-biology content. There is no separate official B7.5 topic.
Easy, Normal and Difficult describe practice demand; they are not the official Core and Extended tiers.
- Cambridge 0653 syllabus2028–2029 · B7.2.2(c);B7.3.4
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