Question

6. List three foods in which most of the calories are contained in protein. 7. What type of bond is necessary for a positive Biuret test? 8. List three foods in which most of the calories are contained in lipids. 9. Complete the following table by listing our uses of each type of macromolecule. | Macromolecule | Use in the body | | :--- | :--- | | Lipid | | | Protein | | | Carbohydrate | | 10. Your instructor has given you three test tubes, each containing a different unknown solution. After subjecting the unknowns to the tests described in today's lab, you have recorded the results in the following table. Identify the type of macromolecule (DNA, protein, starch, lipid, or reducing sugar) in each of the unknown solutions. | | Benedict's | Iodine | Biuret | Sudan IV | Type of molecule | | :--- | :--- | :--- | :--- | :--- | :--- | | Unknown #1 | blue | yellow | violet | clear | | | Unknown #2 | green | yellow | clear | clear | | | Unknown #3 | blue | blue-black | clear | clear | |

          6. List three foods in which most of the calories are contained in protein.

7. What type of bond is necessary for a positive Biuret test?

8. List three foods in which most of the calories are contained in lipids.

9. Complete the following table by listing our uses of each type of macromolecule.

| Macromolecule | Use in the body |
| :--- | :--- |
| Lipid | |
| Protein | |
| Carbohydrate | |

10. Your instructor has given you three test tubes, each containing a different unknown solution. After subjecting the unknowns to the tests described in today's lab, you have recorded the results in the following table. Identify the type of macromolecule (DNA, protein, starch, lipid, or reducing sugar) in each of the unknown solutions.

| | Benedict's | Iodine | Biuret | Sudan IV | Type of molecule |
| :--- | :--- | :--- | :--- | :--- | :--- |
| Unknown #1 | blue | yellow | violet | clear | |
| Unknown #2 | green | yellow | clear | clear | |
| Unknown #3 | blue | blue-black | clear | clear | |

6. List three foods in which most of the calories are contained in protein.

7. What type of bond is necessary for a positive Biuret test?

8. List three foods in which most of the calories are contained in lipids.

9. Complete the following table by listing our uses of each type of macromolecule.

| Macromolecule | Use in the body |
| :— | :— |
| Lipid | |
| Protein | |
| Carbohydrate | |

10. Your instructor has given you three test tubes, each containing a different unknown solution. After subjecting the unknowns to the tests described in today's lab, you have recorded the results in the following table. Identify the type of macromolecule (DNA, protein, starch, lipid, or reducing sugar) in each of the unknown solutions.

| | Benedict's | Iodine | Biuret | Sudan IV | Type of molecule |
| :— | :— | :— | :— | :— | :— |
| Unknown #1 | blue | yellow | violet | clear | |
| Unknown #2 | green | yellow | clear | clear | |
| Unknown #3 | blue | blue-black | clear | clear | |

Added by Matthew Y.

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