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Testing Macromolecules

Testing Macromolecules. Monosaccharides (Glucose). What color is Benedict’s before testing? What is it used to test the presence of? glucose. Which tests are positive for glucose? Which sample shows the highest amount of glucose?. Which is a positive test for glucose?.

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Testing Macromolecules

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  1. Testing Macromolecules

  2. Monosaccharides (Glucose) • What color is Benedict’s before testing? • What is it used to test the presence of? • glucose

  3. Which tests are positive for glucose?Which sample shows the highest amount of glucose?

  4. Which is a positive test for glucose? • What do the various colors mean?

  5. Iodine is what color at start?Which test tube below is a positive test?Which is the control? • Left is potato starch Right is distilled water

  6. Which test positive for starch? • Look for blue-black color

  7. Would you say the iodine and potato (left) is a positive or negative test? • Would you say the iodine and onion (right) is a positive or negative test?

  8. How do glucose molecules and starch molecules compare? glucose starch

  9. Sucrose: glucose + fructose

  10. Sudan IV turns fats redCan you tell where the fat and where the water is in this test tube?

  11. Sudan IV and Milk

  12. What are some difficulties of testing beef broth? Why did we change to chicken broth?

  13. Is this a positive or negative fat test? • Before After drying • Positive

  14. Does milk have lipids? • Added Sudan IV

  15. Would this cat make a positive fat test?

  16. What color is Biuret’s at start?How do you know if your sample is positive for protein?

  17. PROTEIN TEST • Table 5

  18. Does milk have protein? • Added Biuret’s

  19. SUMMARY OF MACROMOLECULE LAB TESTS

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