Question

Explain what are the major advantages of using triacylglycerols (fats) for energy storage over glycogen or starch (both are sugar storage polymers)

Answer 1

Triacylglycerol has two significant advantages over polysaccharides such as glycogen and starch .

The carbon atoms of fatty acids are more reduced than those of sugars ,and oxidation of triacyglycerols yields more than twice as much energy, gram for gram , as that of carbohydrates.

Also the triacylglycerols are hydrophobic and therefore are unhydrated, the organisms that carries fat as fuel does not have to carry the extra weight of water of hydration that is associated with the stored polysaccharides.

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