BIOL 121 Lecture Notes - Lecture 6: Skeletal Muscle, Starch, Macromolecule
Document Summary
Makes up only 1% of the body weight (3% of organic weight) Crucial for energy- especially need at high rates. Monosaccharide"s can be combined by dehydration reactions to form disaccharides or polysaccharides. How we store carbs in our bodies. Can be stored more dense than starch. Make up 15% of body weight (40% of organic weight) Mostly carbon and hydrogen linked by covalent bonds (fatty acid) Long carbon chain with attached hydrogen"s and a carboxyl at one end (flexible and straight, pack tightly) Saturated- no double bonds (as much hydrogen as possible) Unsaturated- at least one double bond (bent) In nature, they always exist in cis conformation. Trans-unsaturated fatty acids are made (food processing), and are still strait but are more rigid thana saturated fatty acid (worst kind of fatty acid) Building blocks for lipids, and signaling molecules in the body. Triglycerides- primary storage form of lipids in the body (fats) Fas within a triglyceride can be saturated or unsaturated.
