BIO 121 Lecture Notes - Lecture 7: Amphiphile, Cell Membrane, Atherosclerosis
Document Summary
Bio 121 - week 4 lecture 7. Structure: a long chain of repeating glucose monomers. Function: glycogen is the storage form of glucose in animals: abundant in muscle and liver cells. The most abundant organic molecule on earth. Structure: many parallel (unbranched) chains of glucose monomers. Chains are held together by hydrogen bonds. Function: cellulose is a structural polysaccharide that makes up the cell walls of plants: unlike starch and glycogen, animals cannot hydrolyze cellulose. Passes through the digestive tract as fiber. The structural polysaccharide in bacterial cell walls. The structural polysaccharide in fungal cell walls. Macromolecules groups together due to their insolubility in water: lipids are hydrophobic (nonpolar) and do not dissolve in water, carbohydrates, proteins and nucleic acids are hydrophilic (polar) and do dissolve in water. Function: a greater energy reserve than carbohydrates. Saturated fats contain three saturated fatty acids: saturated fatty acids have no double bonds in their hydrocarbon chain and are therefore.
