NATS 1610 Lecture Notes - Lecture 17: Subcutaneous Tissue, Shock Absorber, Triglyceride

• School: York University
• Department: Natural Science
• Course: NATS 1610
• Professor: Barbara Czaban

Document Summary

Note that there are a few chemical formulas that you need to know. Web link with many study resources, including web tutorials (not all may be relevant to this course) http://wps. prenhall. com/esm_goodenough_boh_2/24/6205/1588596. cw/index. html. Cells use lipids to store energy, as structural materials, and as signaling molecules. Release energy when lipids are broken down. 1-gram fat stores 9 calories ~ 4 calories per 1 gram of carb or protein. Vitamins lipid soluble (a, d, e, k) Lipids are macromolecules and not true polymers. Composed of several types of basic building blocks (monomers) Types of lipids: lipids with fatty acids, triglycerides (fats) store large amounts of energy, phospholipids are major components of cell membranes, waxes help prevent dehydration, b. lipids with no fatty acids, sterols, steroids. 3 different fatty acids - each has 18 carbons. Each has different number of hydrogen atoms. All c atoms have all h atoms they can hold - saturated . Tip: think of a water saturated sponge.