Lipid
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An energy-rich organic compound such as a fat or oil
Real World Example
Imagine trying to store all your winter clothes in a tiny closet — it's a challenge to fit everything in efficiently. Lipids, like fats and oils, face a similar task as they are energy-rich compounds that need to be compactly stored in our bodies. Just as your closet manages to hold all your bulky sweaters and coats, lipids are able to pack a large amount of energy into a small space, efficiently storing it for when our bodies need it, much like your clothes are ready for when temperatures drop.
Practice Version
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