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Chemistry, 23.01.2020 18:31 dylanolmeda9

The host says that the polar compounds get "stuck" at the hydrophobic core as the reason why polar compounds cannot cross the membrane. sometimes people even describe this as the hydrophobic core "repels" polar compounds. this reasoning is wrong! 1. polar compounds are forming bonds with the water on the outside of the membrane. these bonds are called hydrogen 2. can polar compounds interact in this same way with the hydrophobic tails of the phospholipids? (yes or no) no 3. do interactions form between polar compounds and the hydrophobic tails? (yes or no) no 4. in order for a polar compound to enter into the hydrophobic space of the phospholipid tails, it would need to break the many bonds it has formed with the water and enter into a space where these bonds cannot form. therefore, it is not a repelling action but a "lack of attraction."

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