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29 Oct 2021
Background and context
Lipids are macromolecules that provide energy, insulation from the environment, and protection from water. They are important constituents of hormones and cell membranes. They include fats, phospholipids, oils, waxes, and steroids. Steroids are a type of lipid molecule. Cholesterol is a steroid that is an important component of the plasma membrane. It provides fluidity to the plasma membrane. Plasma membranes are composed of phospholipids, proteins, carbohydrates, and cholesterol.
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