1. Identifying Macromolecules

2. DO NOW Get out your Macromolecules HW & Macromolecules Structure Label
Turn in your Macromolecules Concept Map
Different organisms store glucose in various forms. You discover an unidentified specimen. Upon chemical analysis you find that it is made of significant amounts of STARCH. Which of the following organisms is this new species probably closely related?
A. Potato B. Mushroom C. Dog D. Maple Tree

3. Simple Sugars: Monosaccharides

4. Indicator: Benedict’s Solution

5. Steps of Use Add drops of Benedicts Place test tube in hot water bath
Observe color change

6. Positive Test: Turns Green to Red

7. Negative Test: Remains Blue

8. Complex Sugars: Polysaccharides

9. Indicator: Iodine

10. Steps of Use
Add drops of Iodine
Observe color change

11. Positive Test: Turns Black

12. Negative Test: Remains Yellow

13. WARNING!
Can stain clothes and skin

14. Lipids

15. Indicator: Brown Paper Bag or Towel

16. Steps of Use Add drops of unknown to paper bag or towel Let dry
Look for a grease spot

17. Positive Test: Grease Spot

18. Negative Test: Normal Paper Towel/Bag

19. Proteins

20. Indicator: Biuret’s

21. Steps of Use
Add drops of Biuret’s
Observe color change

22. Positive Test: Turns Purple

23. Negative Test: Remains Blue

24. WARNING
Corrosive and poisonous. DO NOT SWALLOW!