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Q.
Triglycerides consist of
NTA AbhyasNTA Abhyas 2020
Solution:
Lipids are non-polar biomolecules soluble in organic solvents such as chloroform, and insoluble in water. Lipids include fats, phospholipids, and steroids.
Fats have a glycerol backbone that is attached to the fatty acids. The number of fatty acids linked can be one, two, and three, forming the composite molecule monoglyceride, diglyceride, and triglyceride. The three fatty acids and glycerol from the complex, which is termed triacylglycerol. The three fatty acids and glycerol forms this complex, which is termed triacylglycerol. Triacylglycerol is also called triglyceride or neutral fat. The ester bonds link the glycerol with fatty acids.
Fatty acids are long unbranched hydrocarbon chains. Both ends of hydrocarbon chains have a very different structure, hence other properties. The ending, which bears the carboxyl group (-COOH), is negatively charged and hydrophilic. In contrast, the chain is hydrophobic. Because of both hydrophilic and hydrophobic regions within a single molecule, it is said to be amphipathic. Fatty acids differ in having (i) hydrocarbon chain length, typically from 14 to 20 carbon-long and (ii) presence or absence of a double bond.