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→Key Stage 4
==Key Stage 4==
===Meaning===
[[Lipid]]s are [[molecule]]s, made of a [[glycerol]] head and 3 [[Fatty Acid|fatty acid]] tails, that is are found in fats and oils.
===About Lipids===
: [[Lipid]]s are an essential [[nutrient]] in our [[diet]] that is used in our [[Nervous System|nervous system]].
: [[Lipid]]s store [[Chemical Potential Energy Store|chemical energy]] at a higher [[energy]] density than [[carbohydrate]]s so the body stores extra [[energy]] in [[Fatty Tissue|fatty tissue]] made of [[lipid]]s.
: If there are too much many [[lipid]]s in our [[diet]] then we can become [[Obesity|obese]].: [[Lipid]]s are broken down by our [[Digestive System|digestive system]] into a [[glycerol]] head and 3 [[Fatty Acid|fatty acidacids]] tails.: The [[Fatty Acid|fatty acids]] in [[lipid]]s can be many different lengthsbut the [[glycerol]] head is the same for all [[lipid]]s.
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