AP Lab 17
Lab17 Nutrition BIO202L
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Access Code (located on the lid of your lab kit): Click here to enter text.
Pre-Lab Questions:
”1. How do the intake of nutrients and expenditure of energy relate to a metabolic level?”
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”2. Do you think you take in more calories than you burn in a day? Why or why not? ”
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Experiment 1: Tracking Your Nutrition
Macronutrient Graph Screenshot:
”Analysis:
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Experiment 2: Testing for Reducing Sugars
Table 1. Testing for Proteins Results
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Initial Color
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Hypothesis (Protein +/-)
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Final Color
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Protein Present?
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Albumin (1)
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Gelatin (2)
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Glucose (3)
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Water (4)
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Table 2. Testing for Reducing Sugars Results
Sample
Initial Color
Hypothesis
(Reducing Sugar +/-)
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Final Color
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Reducing Sugar Present?
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Potato (1)
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Onion (2)
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Glucose (3)
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Water (4)
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Table 3. Testing for Starch Results
Sample
Initial Color
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Hypothesis
(Starch +/-)
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Final Color
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Starch Present?
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Potato (1)
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Onion (2)
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Starch (3)
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Water (4)
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Table 4. Testing an
Unknown
– Proteins
Sample
Initial Color
Hypothesis (Protein +/-)
Final Color
Protein Present?
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Positive Control (1):
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Negative Control (2):
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Unknown (3)
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Table 5. Testing an Unknown – Reducing Sugars
Sample
Initial Color
Hypothesis (Reducing Sugar +/-)
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Final Color
Reducing Sugar Present?
Positive Control (1):
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Negative Control (2):
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Unknown (3)
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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):
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Negative Control (2):
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Unknown
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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. ”
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”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? ”
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”3. What results would you expect if you tested ribose, a monosaccharide, with Benedict’s solution? What results would you expect if you tested it with IKI? ”
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”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? ”
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”Insert a screenshot of your test tubes after the starch test from “Testing An Unknown”: ”
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