How did your a priori predictions from Table 1 compare to your actual results in Table 2?
Post-Lab Questions
1. How did your a priori predictions from Table 1 compare to your actual results in Table 2? If there were any inconsistencies, explain why this occurred. (5 points)
2. Identify the positive and negative controls used in this experiment. Explain how each of these controls are used, and why they are necessary to validate the experimental results. (5 points)
3. Identify two regions in which proteins are vital components in the human body. Why are they important to these regions? (5 points)
4. Diet and nutrition are closely linked to the study of biomolecules. Describe one method by which you could monitor your food intake to ensure the cells in your body have the materials necessary to function. (5 points)
Experiment 2: Testing for Reducing Sugars
Data Tables and Post-Lab Assessment
Table 3:Testing for Reducing Sugars Results(15 points)
| Sample | Initial Color | Final Color | Reducing Sugar Present |
| 1 – Potato | |||
| 2 – Onion | |||
| 3 – Glucose Solution | |||
| 4 – Water | |||
| 5 – Unknown |
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. (5 points)
2. What can you conclude about the molecular make-up of potatoes and onions based on the test you performed? Why might these foods contain these substance(s)? (5 points)
3. What results would you expect if you tested ribose, a monosaccharide, with Benedict’s solution? Biuret solution? (5 points)
Experiment 3: What Household Substances are Acidic or Basic?
Data Tables and Post-Lab Assessment
Table 4:pH Values of Common Household Substances(5 points)
| Substance | pH Prediction | pH Test Strip Color |
| Acetic Acid (Vinegar) | ||
| Sodium Bicarbonate Solution (Baking Soda) |
Post-Lab Questions
1. What is the purpose of determining the pH of the acetic acid and the sodium bicarbonate solution before testing the other household substances? (5 points)
2. Compare and contrast acids and bases in terms of their H+ ion and OH– ion concentrations. (5 points)
3. Name two acids and two bases you often use. (5 points)
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How did your a priori predictions from Table 1 compare to your actual results in Table 2? was first posted on April 23, 2019 at 11:12 am.
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