Biochemistry 2280A Lecture Notes - Lecture 6: Monounsaturated Fat, Calorie, Cell Membrane

• School: Western University
• Department: Biochemistry
• Course: Biochemistry 2280A

Document Summary

Major main classes of biomolecules: amino acids to proteins, nucleotides to nucleic acids, monosaccharides to polysaccharides, lipis. 1 calorie = amount of energy need to raise temperature of 1 kg of water by 1oc. Types of lipids: fatty acids - energy and structure. A carboxylic acid with carbons joined to it in a long linear chain. Saturated fatty acid - cannot fit anymore hydrogen atoms on the carbons (all carbon- carbon single bonds). Unsaturated fatty acid - has at least one carbon-carbon double bond. Db can be cis or trans depending on orientation of carbons. Cis fatty acids are accuratley shown bent in chain because there is no rotation around the db. Monounsaturated the double bond will always be on the 9ths carbon. When db"s are added to a monounsaturated fatty acid typically goes relative to the first db (they are not conjugated) Organic chemists count from the carboxylic acid inwards.