A-LevelBiologyCell structureMay/June 2025Paper 2 Q27 Marks
In mammals, the small intestine is the main site of absorption of the products of digestion. Fig. 2.1 is a transmission electron micrograph of a longitudinal section (L.S.) of part of an epithelial cell from the small intestine of a mammal. Fig. 2.2 is a transmission electron micrograph of a horizontal section made at the position indicated by the two arrows in Fig. 2.1. [Figure 2.1] [Figure 2.2]
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