Triacylglycerols are more efficient to store than carbohydrates because their hydrophobicity allows them to be stored in adipose cells without large amounts of bound water molecules.

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Triacylglycerols are hydrophobic molecules that are nonpolar and insoluble in water. This means that they do not attract as many bound water molecules as carbohydrates, which are hydrophilic and attract large amounts of water. Due to this property, triacylglycerols are more space-efficient to store in adipose cells, making them a better energy storage molecule than carbohydrates.

Triacylglycerols Are More Efficient to Store Than Carbohydrates Because Their