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Question

Which among the following is a phospholipid?

A
Lecithin
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B
Arachidonic acid
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C
Cholesterol
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D
Linoleate
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Solution

The correct option is A Lecithin
Lecithin is a phospholipid. Phospholipids are esters of two molecules of fatty acids with a glycerol molecule and also have phosphate group attached to it. It is a constituent of cell membranes.

Arachidonic acid is a fatty acid with 20 carbon atoms.
Linoleic acid is a fatty acid with 18 carbon atoms.
Cholesterol is a derived lipid found in cell membranes. It is composed of steroid and alcohol.

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