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triglycerides
1) triglycerides (fatty acids) (2) Phospholipids (similar to triglycerides) but contain phosporus and 3) sterols (cholesterol)
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Saturated triglycerides have more hydrogen's than unsaturated triglycerides.
The shape, length, and saturation of the fatty acids are ways that triglycerides are classified. Triglycerides are classified as a fat.