LIPID (FAT) NOTES

Waxy or oily compounds that store energy in their bonds Lipids Waxy or oily compounds that store energy in their bonds Elements in lipids – carbon, hydrogen & oxygen Examples – fats, oils & waxes

Functions in the body Long-term energy storage Insulation Forms the protective membrane that surrounds each cell Some used as chemical messengers

Types of Lipids Saturated – fats that hold all the hydrogen that molecule can hold Examples: shortening & butter H H H H – C – C – C – O – H H H H

Types of Lipids, cont. Unsaturated – fats that have some spaces left in the molecule for hydrogen Examples: oils H C = C = C – O – H H H

Building Blocks Fatty acids – the building blocks of fats (lipids)

Food Energy 1 gram of lipids (fat) is 9 calories Healthy Living Fact: Your body needs some fat. Read the nutrition labels & choose unsaturated fats instead of saturated or trans fats