HOME WORK
Lab 17 Nutrition BIO202L
Student Name: Click here to enter text.
Access Code (located on the lid of your lab kit): Click here to enter text.
1. How do the intake of nutrients and expenditure of energy relate to a metabolic level?
Click here to enter text.
2. Do you think you take in more calories than you burn in a day? Why or why not?
Click here to enter text.
Experiment 1: Tracking Your Nutrition
Macronutrient Graph Screenshot:
Analysis: Click here to enter text.
Experiment 2: Testing for Reducing Sugars
Table 1. Testing for Proteins Results
Sample
Initial Color
Hypothesis (Protein +/-)
Final Color
Protein Present?
Albumin (1)
Click here to enter text.
Click here to enter text.
Click here to enter text.
Click here to enter text.
Gelatin (2)
Click here to enter text.
Click here to enter text.
Click here to enter text.
Click here to enter text.
Glucose (3)
Click here to enter text.
Click here to enter text.
Click here to enter text.
Click here to enter text.
Water (4)
Click here to enter text.
Click here to enter text.
Click here to enter text.
Click here to enter text.
Table 2. Testing for Reducing Sugars Results
Sample
Initial Color
Hypothesis
(Reducing Sugar +/-)
Final Color
Reducing Sugar Present?
Potato (1)
Click here to enter text.
Click here to enter text.
Click here to enter text.
Click here to enter text.
Onion (2)
Click here to enter text.
Click here to enter text.
Click here to enter text.
Click here to enter text.
Glucose (3)
Click here to enter text.
Click here to enter text.
Click here to enter text.
Click here to enter text.
Water (4)
Click here to enter text.
Click here to enter text.
Click here to enter text.
Click here to enter text.
Table 3. Testing for Starch Results
Sample
Initial Color
Hypothesis
(Starch +/-)
Final Color
Starch Present?
Potato (1)
Click here to enter text.
Click here to enter text.
Click here to enter text.
Click here to enter text.
Onion (2)
Click here to enter text.
Click here to enter text.
Click here to enter text.
Click here to enter text.
Starch (3)
Click here to enter text.
Click here to enter text.
Click here to enter text.
Click here to enter text.
Water (4)
Click here to enter text.
Click here to enter text.
Click here to enter text.
Click here to enter text.
Table 4. Testing an Unknown – Proteins
Sample
Initial Color
Hypothesis (Protein +/-)
Final Color
Protein Present?
Positive Control (1):
Click here to enter text.
Click here to enter text.
Click here to enter text.
Click here to enter text.
Negative Control (2):
Click here to enter text.
Click here to enter text.
Click here to enter text.
Click here to enter text.
Unknown (3)
Click here to enter text.
Click here to enter text.
Click here to enter text.
Click here to enter text.
Table 5. Testing an Unknown Reducing Sugars
Sample
Initial Color
Hypothesis (Reducing Sugar +/-)
Final Color
Reducing Sugar Present?
Positive Control (1):
Click here to enter text.
Click here to enter text.
Click here to enter text.
Click here to enter text.
Negative Control (2):
Click here to enter text.
Click here to enter text.
Click here to enter text.
Click here to enter text.
Unknown (3)
Click here to enter text.
Click here to enter text.
Click here to enter text.
Click here to enter text.
Table 6. Testing an Unknown Starch
NOTE: Before filling in this table, take a screenshot of your test tubes to include at the end of this document.
Sample
Initial Color
Hypothesis
(Starch +/-)
Final Color
Starch Present?
Positive Control (1):
Click here to enter text.
Click here to enter text.
Click here to enter text.
Click here to enter text.
Negative Control (2):
Click here to enter text.
Click here to enter text.
Click here to enter text.
Click here to enter text.
Unknown
Click here to enter text.
Click here to enter text.
Click here to enter text.
Click here to enter text.
Post-Lab Questions
1. Write a statement to explain the molecular composition of the unknown solution based on the results obtained during testing with each reagent.
Click here to enter text.
2. What can you conclude about the molecular make-up of potatoes and onions based on the tests you performed? Why might these foods contain these substances?
Click here to enter text.
3. What results would you expect if you tested ribose, a monosaccharide, with Benedicts solution? What results would you expect if you tested it with IKI?
Click here to enter text.
4. Diet and nutrition are closely linked to the study of biomolecules. How should you monitor your food intake to insure the cells in your body have the materials necessary to function?
Click here to enter text.
Insert a screenshot of your test tubes after the starch test from Testing An Unknown:
