Intestinal epithelial cells are adapted for glucose absorption with microvilli for increased surface area, numerous mitochondria providing ATP for active transport, carrier proteins for active transport and facilitated diffusion, and co-transport proteins for sodium-glucose symport.
Intestinal epithelial cells are adapted for glucose absorption with microvilli for increased surface area, numerous mitochondria providing ATP for active transport, carrier proteins for active transport and facilitated diffusion, and co-transport proteins for sodium-glucose symport.
| Front | The epithelial cells that line the small intestine are adapted for the absorption of glucose. Explain how. ( 6 marks) |
|---|---|
| Back | 1. Microvilli; 2. Large/increased surface area; 3. Many mitochondria; 4. (Mitochondria/respiration) produce ATP / release or provide energy (for active transport); 5. Carrier proteins for active transport; 6. Channel / carrier proteins for facilitated diffusion; 7. Co-transport of sodium (ions) and glucose or symport / carrier protein for sodium (ions) and glucose; 8. Membrane-bound enzymes digest disaccharides / produce glucose; |
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