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Echo,Jason,Philip Menu Brief introduction Amino acid Soluble and insoluble Expand 1 2 3 4 Brief introduction Proteins are complex molecules made up of C,H,Obut they also contain N,S. it is long chain molecules made up of smaller molecules called amino acids . proteins Proteins Proteins have 4 levels Primary order of AA Secondary folding chain of AA Tertiary 3-D shape of protein Quaternary multiple proteins combined together Amino acid different amino acid molecules peptide bond part of a protein molecule Amino acid polar 1 none polar 2 passive negative charge charge 3 4 Soluble comment proteins water cytoplasm blood enzymes Q3:Do you Q1:What know the enzymes are? three type Q2:How that enzymes enzymes can be divided by their's work? function? gift! Q4:Do you know the 5 important properties? Soluble comment proteins There are more enzymes in our bodies and more integrated ,our body will be more healthy . Human bodies and mammals contain about 5000 kinds of enzymes . Soluble comment proteins —Only exist in the blood of vertebrate . —Exterminate the pathogen . —important part to —metabolism ,growth and reproduction —transport oxygen —make blood look red Insoluble proteins make fibres fibrous protein found in skin and hair Summary Proteins are vital for growth and repair of cells and tissues as they formimportant components of cell membranes. Expand Which one is not the main physiological function of proteins in human bodies? A)transportation B)immune(means use antibodies to prevent something bad for us) C)genetic D)regulation Genetic effect comes from the nucleic acid rather than proteins. Expand Which one is the function that proteins have but sugar doesn't have? A)control the matabolism B)make up cell membrane C)make up genetic material D)the main energy for organism Hormones is a kind of protein,and it can control the matabolism but suger can't. Expand The relation of Protein primary structure and its function,which one is right? A)the function must be different if protein make up by different amino acid. Use Def. of protein to solve B)the function of the protein will be more this ifproblem. similar the protein primary structure are more similar. C)the same protein comes form different organism,the primary structure is the same. D)all of them are wrong. Video Time! http://video.about.com/biology/What-Are-theFunctions-of-Proteins-.htm#vdTrn Thanks for listening Echo,Jason,Philip