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Recall and explain
A vitamin is destroyed by the acid in the stomach. It is sold in a capsule with a coating that does not dissolve in the stomach. Which row shows where the coating should dissolve, so that as much of the vitamin as possible reaches the blood, and the reason?
identify: name or select.
| Row | Where the coating should dissolve | Reason |
|---|---|---|
| A | small intestine | nutrients are absorbed there |
| B | colon | most nutrients are absorbed there |
| C | small intestine | the vitamin is digested there |
| D | colon | food stays there longest |
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Scope and sources
Cambridge IGCSE Biology 0610 · 2026–2028 v3 · Original learning materials.
Absorption (7.5.1–7.5.5): the small intestine as the region where nutrients are absorbed, where water is absorbed (small intestine and colon), and, for the Supplement, villi and microvilli, the structure of a villus and the roles of its capillaries and lacteal. Digestion itself is in the physical and chemical digestion modules; assimilation and the hepatic portal vein are not covered.
Apparatus, amounts and times in the experiment are illustrative. Real practical work follows a teacher-approved safety method.
Official Cambridge syllabus