1. SEATS! 2 ND HOUR

2. SEATS! 3 RD HOUR

3. Bellwork Tuesday 9/20 1.Answer in a complete sentence: How are proteins different from carbohydrates? 2.How does shape determine function in proteins? 3.Draw the shape of a protein that might be responsible for cutting things in your body. ok, check this out: http://www.youtube.com/watch?v=aA5fyWJh5S0 http://www.youtube.com/watch?v=aA5fyWJh5S0 4. What is your opinion on this quote: “Science is the belief in the ignorance of experts” -Richard Feynman

4. Sugar and Starch Quiz

5. 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

6. White Boards With you table partners: 1.Draw a fat molecule 2.What do you think the purpose of fat is for the body? 3.How many calories are in fat compared to carbs or protein? Half? Twice as many? 4.Do you know of any different types of fats (hint: they are sometimes shown on nutrition fact labels)

7. –Have 2 building blocks fatty acid glycerol –Function long-term storage of energy Twice the energy of carbs & proteins –Fats = 9 calories/gram –Carbs & Proteins = 4 calories/gram Fats (Lipids)

8. Two types of Lipids –A) Oils Liquids at room temp From plants & fish –Olive, corn, sunflower, peanut Are unsaturated

9. 1 Glycerol + 3 Fatty Acids = 1 Lipid Molecule

10. B) Fats –Are solids at room temp –From animals Lard, butter, cheese, marbling in beef Are saturated

11. Saturated Fat!

12. Saturated (straight) Unsaturated (lumpy)

13. Trans Fats –Most Unhealthy –Start with an oil Bubble hydrogen gas through it Becomes “hydrogenated” and a solid Like “Crisco” or shortening –Found in baked goods and fried foods Cookies, cakes, donuts Chips, fried chicken & french fries

15. Bad Fats linked to: –Heart Disease –Stroke –Cancer –Liver Diseases

16. “Olestra” = Fat Substitute Tastes similar to fat Can’t digest it properly