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Lipids are essential biomolecules, highly concentrated and providing twice the energy of carbohydrates. They include saturated fats, which are solid at room temperature and should be limited in diets due to their potential health risks, and unsaturated fats, which are liquid and considered healthier. Cholesterol, a crucial lipid, is vital for cell membranes and hormone production but can lead to health issues when present in excess. This overview explores the various examples and functions of lipids, emphasizing their importance in biological systems.
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Lipids • Examples • _________________ • _________________ • _________________ • _________________ • sex hormones • testosterone (male) • estrogen (female)
Lipids • Function: • _________________ • very concentrated • twice the energy as carbohydrates! • _________________ • _________________ • _________________ • think whale blubber!
Structure of Fat not a chain (polymer) = just a “big fat molecule”
Saturated fats • __________________ • solid at room temperature • Limit the amount in your diet • ________________ ________________ • deposits in arteries
Unsaturated fats • _________________ • liquid at room temperature • the fat molecules don’t stack tightlytogether • Better choice in your diet
Saturated vs. unsaturated _____________ _____________
Other lipids in biology • Cholesterol • good molecule in cell membranes • make hormones from it • including sex hormones • but too much cholesterol in blood may lead to heart disease
Other lipids in biology • Cell membranes are made out of lipids • _________________ • ________ are on the outside touching water • “like” water • ________ are on inside away from water • “scared” of water • forms a barrier between the cell & the outside
Let’s build some Lipids!
