The Digestive System, gastrointestinal system - GIT
Biomolecules are organic molecules that are associated with living organisms. Four groups Carbohydrates Monosaccharides Fructose, Glucose, Galactose Disaccharides Sucrose (table sugar) Fructose + Glucose Maltose Glucose + Glucose Lactose Glucose + Galactose Polysaccarides Polymers of Disaccharides Glycogen Lipids - lipid related molecules Phospholipids 3 carbon glycerol plus long fatty acids. Phosphate group (-H2PO4) saturated fatty acids - no double bonds -palmitic acid monounsaturated - one double bond - oleic acid, or Olive oil is healthy polyunsaturated - two or more double bonds - associated with atherosclerosis Trans fats - are as likely to cause atherosclerosis - OH bonds in margarines that make it solid at room temp - So it does not matter if trans fatty acid free margarine - they "all the same" Triglicerides - 90% of all fats in the body Steroids Cholesterol is the source Important component of cell membranes Eicosano