Which lipid class is commonly considered hydrophilic?

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Multiple Choice

Which lipid class is commonly considered hydrophilic?

Explanation:
Phospholipids are amphipathic, with a polar, hydrophilic head containing a phosphate group and nonpolar hydrophobic tails. The water-loving head interacts readily with aqueous environments, while the tails avoid water, so in water they arrange into structures like membranes with heads facing outward. The other lipid classes are largely nonpolar and hydrophobic: cholesterol esters lack free polar groups, wax esters are long nonpolar chains, and mono/diglycerides are dominated by fatty acid tails. Because of this, they don’t interact with water as readily as phospholipids. So the lipid class commonly considered hydrophilic is phospholipids.

Phospholipids are amphipathic, with a polar, hydrophilic head containing a phosphate group and nonpolar hydrophobic tails. The water-loving head interacts readily with aqueous environments, while the tails avoid water, so in water they arrange into structures like membranes with heads facing outward. The other lipid classes are largely nonpolar and hydrophobic: cholesterol esters lack free polar groups, wax esters are long nonpolar chains, and mono/diglycerides are dominated by fatty acid tails. Because of this, they don’t interact with water as readily as phospholipids. So the lipid class commonly considered hydrophilic is phospholipids.

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