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Transcript
SEATS! 2ND HOUR SEATS! 3RD HOUR Bellwork Monday 9/19 *Quiz tomorrow over starch & sugar 1. The cafeteria is serving a mysterious food for lunch today. Mr. Horton, concerned about his wonderful students, has decided to help them out. I conducted a test for starch, sugar, and protein to try to determine what the food is (it isn’t necessarily one we tested in class). The starch test was brown but not black. The sugar and protein test are shown below. Based on these results, what food do you think it could be and Why? Sugar Test Protein test 2. Answer in 2-3 sentences: Drew has been buying protein shakes from his gym to gain muscle, but they do not have nutrition facts. How could he determine whether they actually have much protein in them? (Be specific about what he would do, what he would measure, etc) PROTEINS!! Made up of amino acid building blocks – 1000’s of functions: • muscle movement • digestive enzymes • Antibodies – Body structures are made of proteins • Hair, fingernails, muscles, enzymes • Each kind of protein has a special shape – Starts out as a long chain of amino acids – The chain of amino acids then folds up into a unique 3-D shape – Function and shape go together • 2 examples of “Shape & Function Match” –A) Hemoglobin • Function –carry oxygen in blood • Shape is like a “cage” –Oxygen fits perfectly inside cage • Muscle Protein – Function • Contract & relax to cause movement – Shape • long & thin with “teeth” like combs • Teeth grip & ungrip like Velcro • Slide to get longer & shorter More Overlap = shorter muscle Less Overlap = longer muscle THINK PAIR SHARE 1. Could hemoglobin do the job of muscle protein? 2. Could muscle protein do the job of hemoglobin? WHY NOT? Holy cow muscles are cool • http://www.youtube.com/watch?v=CepeYF vqmk4 5 pts: Protein Q & A 1) What are the building blocks for proteins? 2) Proteins start out __________________ & end up ___________________________. 3) Explain how “Shape Matches Function” for hemoglobin. 4) Explain how “Shape Matches Function” for muscle proteins. 5) What are 2 other examples protein functions other than hemoglobin and muscle protein? 6) How can proteins have so many different shapes and functions in the body? Don’t have to write the question But write In complete sentences