8Lipids Compounds which are NOT soluble in water Building blocks are fatty acids Main function is energy storage Examples –Fats (butter, lard, crisco) –Phospholipids (cell membrane) –Oils (olive oil, vegetable oil, peanut oil) –Waxes –Steroids
9 Lipids Main functions of lipids: 1. Long term energy storage --can be broken down for energy 2.Provide insulation 3.Forms protective coatings --waxes (plant surfaces, duck feathers, beaver fur) 4.Major component of membranes (phospholipids) NeedToKnow!!!
10 Proteins peptide bondsAmino acids bonded together by peptide bonds –Also known as polypeptides –Only 20 AA and the order/way they are put together determine the protein Building Blocks are amino acidsBuilding Blocks are amino acids Functions of proteins:Functions of proteins: –Structure for tissues and organs –Enzymes (speed up chemical reactions) –Cellular Metabolism –Form hair, muscles, nails, horns, hooves, etc!! NeedToKnow!!!
11 Nucleic Acids Building Blocks are nucleotides Two types –Deoxyribonucleic acid DNA-double helix –Ribonucleic acid RNA-single strand Stores all genetic info, instructions for making proteins, main energy molecule for cells (ATP)
12 Nucleic Acids Nucleotides are made ofNucleotides are made of –phosphate –sugar –nitrogen base adenine (A)adenine (A) thymine (T)thymine (T) uracil (U)uracil (U) cytosine (C)cytosine (C) guanine (G)guanine (G)