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Phospholipids forms bilayers because one end is soluble in water and other end is i soluble in water.Triglycerides form droplets because of uneven distribution of charge within molecules.
02 October 2017
because heads, water loving, are attracted to the water in the cytoplasm inside the cell and the watery fluids outside the cell
28 November 2017
Triglycerides form by condensation (dehydration) reactions between the hydroxyl (OH) groups of the glycerol and the carboxyl (COOH) group of three fatty acids.Triglycerides are esters being derived from an alcohol and a fat. Triglycerides are insoluble in water because they have no charge i.e. they have covalent bonds. This causes them to form droplets in the cytoplasmThe structure of phospholipids is based on the structure of triglycerides but the third hydroxyl group of the glycerol is linked to phosphoric acid which is often linked to a large polar group.The fatty acids which make up phospholipids have a consistent length of between 16 and 18 carbons. This allows them to form neat bilayers. Phospholipids are said to be amphipathic, having two very different sides to their nature.
29 November 2017
Triglycerides have polar (charged) heads and non polar fatty acid tails so the charge on the molecule is unevenly distributed.The polar head attracts water (which is also polar molecule due to unevenly charge distribution). The hydrophobic tails repel water as they are water insoluble. This causes the triglycerides to arrange themselves where polar heads surrounding water in the cytoplasm and the tails are pointed away.They form spherical droplets rather than any other shapes because, a sphere is the most efficient shape to form in nature. An example of this is that bubbles are nearly always spherical.
30 November 2017
When phospholipids are mixed with water, they spontaneously rearrange themselves to form the lowest free-energy configuration. This means that the hydrophobic regions find ways to remove themselves from water, while the hydrophilic regions interact with water. The resulting structure iscalled a lipid bilayer.Then triglycerides,In phospholipids, the two fatty acids are hydrophobic, or insoluble in water. But the phosphate group is hydrophilic, or soluble in water. When phospholipids are mixed with water, they spontaneously rearrange themselves to form the lowest free-energy configuration.
12 July 2018
When phospholipids are mixed with water, they spontaneously rearrange themselves to form the lowest free-energy configuration. This means that the hydrophobic regions find ways to remove themselves from water, while the hydrophilic regions interact with water. The resulting structure iscalled a lipid bilayer.Then triglycerides,In phospholipids, the two fatty acids are hydrophobic, or insoluble in water. But the phosphate group is hydrophilic, or soluble in water. When phospholipids are mixed with water, they spontaneously rearrange themselves to form the lowest free-energy configuration.
12 July 2018
When phospholipids are mixed with water, they spontaneously rearrange themselves to form the lowest free-energy configuration. This means that the hydrophobic regions find ways to remove themselves from water, while the hydrophilic regions interact with water. The resulting structure iscalled a lipid bilayer.Then triglycerides,In phospholipids, the two fatty acids are hydrophobic, or insoluble in water. But the phosphate group is hydrophilic, or soluble in water. When phospholipids are mixed with water, they spontaneously rearrange themselves to form the lowest free-energy configuration.
12 July 2018
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