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Nilanjan Bhowmick AIR 3, CSIR NET (Earth Science)
- CSIR NET
- Life Sciences
In a plasma membrane structure,why non polar tails face each other ? why not non polar tail and polar head?
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Priya sarda
The simple rule of thumb for solubility is that “like dissolves like”. So polar and charged substances are more likely to dissolve in polar or charged solvents; non-polar substances are more likely to be able to dissolve in non-polar solvents. The cell membrane is a lipid bilayer, a fat-based barrier that separates an aqueous environment outside the cell from the aqueous cytoplasm within it. Substances that dissolve well in the lipid bilayer are likely to be similarly non-polar and this is why a molecule like benzene can diffuse across this barrier quite easily. It’s also the reason why membrane-spanning proteins have regions full of amino acids with non-polar side-chains corresponding to the part of the protein in contact with the hydrophobic lipid layer. Any part of a membrane protein that pokes out into the aqueous medium on either side is conversely rich in amino acids with charged and polar side-chains.
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Priya sarda
The simple rule of thumb for solubility is that “like dissolves like”. So polar and charged substances are more likely to dissolve in polar or charged solvents; non-polar substances are more likely to be able to dissolve in non-polar solvents. The cell membrane is a lipid bilayer, a fat-based barrier that separates an aqueous environment outside the cell from the aqueous cytoplasm within it. Substances that dissolve well in the lipid bilayer are likely to be similarly non-polar and this is why a molecule like benzene can diffuse across this barrier quite easily. It’s also the reason why membrane-spanning proteins have regions full of amino acids with non-polar side-chains corresponding to the part of the protein in contact with the hydrophobic lipid layer. Any part of a membrane protein that pokes out into the aqueous medium on either side is conversely rich in amino acids with charged and polar side-chains.
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Priya sarda
The simple rule of thumb for solubility is that “like dissolves like”. So polar and charged substances are more likely to dissolve in polar or charged solvents; non-polar substances are more likely to be able to dissolve in non-polar solvents. The cell membrane is a lipid bilayer, a fat-based barrier that separates an aqueous environment outside the cell from the aqueous cytoplasm within it. Substances that dissolve well in the lipid bilayer are likely to be similarly non-polar and this is why a molecule like benzene can diffuse across this barrier quite easily. It’s also the reason why membrane-spanning proteins have regions full of amino acids with non-polar side-chains corresponding to the part of the protein in contact with the hydrophobic lipid layer. Any part of a membrane protein that pokes out into the aqueous medium on either side is conversely rich in amino acids with charged and polar side-chains.
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Priya sarda
![best-answer]()
The simple rule of thumb for solubility is that “like dissolves like”. So polar and charged substances are more likely to dissolve in polar or charged solvents; non-polar substances are more likely to be able to dissolve in non-polar solvents. The cell membrane is a lipid bilayer, a fat-based barrier that separates an aqueous environment outside the cell from the aqueous cytoplasm within it. Substances that dissolve well in the lipid bilayer are likely to be similarly non-polar and this is why a molecule like benzene can diffuse across this barrier quite easily. It’s also the reason why membrane-spanning proteins have regions full of amino acids with non-polar side-chains corresponding to the part of the protein in contact with the hydrophobic lipid layer. Any part of a membrane protein that pokes out into the aqueous medium on either side is conversely rich in amino acids with charged and polar side-chains.
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Priya sarda
The simple rule of thumb for solubility is that “like dissolves like”. So polar and charged substances are more likely to dissolve in polar or charged solvents; non-polar substances are more likely to be able to dissolve in non-polar solvents. The cell membrane is a lipid bilayer, a fat-based barrier that separates an aqueous environment outside the cell from the aqueous cytoplasm within it. Substances that dissolve well in the lipid bilayer are likely to be similarly non-polar and this is why a molecule like benzene can diffuse across this barrier quite easily. It’s also the reason why membrane-spanning proteins have regions full of amino acids with non-polar side-chains corresponding to the part of the protein in contact with the hydrophobic lipid layer. Any part of a membrane protein that pokes out into the aqueous medium on either side is conversely rich in amino acids with charged and polar side-chains.