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BIOLOGY TOPIC 6 HUMAN PHYSIOLOGY
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Question:
What are the different transport mechanisms for different nutrients? (4) SFSO
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Answer:
Simple diffusion = hydrophobic (fats) cross the hydrophobic part of the membrane. Then passes through the lacteals Facilitated diffusion = monosaccharides, vitamins and minerals are transported by channel proteins helps hydrophilic food pass through the hydrophobic part of the membrane Secondary Active Transport = glucose + amino acids are co-transported with sodium ions (Active translocation) with a transport protein Osmosis: water diffuses across membrane passively as ions and solutes move across in the small and large intestine
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