GCSE Combined Science (AQA)

622 videos | 38 hours

Lipids & Lipases

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Organisation Animal Tissues, Organs and Organ Systems

Lipids & Lipases

1:47 Digestive Enzymes in Detail
Spec 4.2.2.1 4.2.2.3
Previous Proteins & Proteases Next Collision Theory
  • Lipids are fats and oils, composed of fatty acids and glycerol.
  • High-fat foods include cheese, various oils (sunflower, vegetable, olive), and fatty or processed meats and fish.
  • Fats are often perceived as unhealthy but can be beneficial.
  • Lipids are digested by lipases, enzymes that break them down into fatty acids and glycerol.
  • The digestion process can be represented by a word equation: Lipids, broken down by lipase, yield three fatty acids and glycerol.
  • Lipases are produced in the pancreas, which is located below the stomach and releases enzymes into the small intestine.
  • After digestion, fatty acids and glycerol are used to build new lipids, which can form new tissues or be stored as fat.
  • Healthy fat levels are crucial for mammals for body protection, insulation, and energy storage.

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